Home / 139,734,047,875.92-209,526,497,341.56-72,513,609,890.64

Finding the Fourth Proportional to 139,734,047,875.92, 209,526,497,341.56 and 72,513,609,890.64

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Solution

The fourth proportional to 139,734,047,875.92, 209,526,497,341.56 and 72,513,609,890.64 is: 108,731,715,146.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,734,047,875.92 : 209,526,497,341.56 = 72,513,609,890.64 : x
  2. Step 2: Convert to fraction form
    139,734,047,875.92/209,526,497,341.56 = 72,513,609,890.64/x
  3. Step 3: Cross multiply
    139,734,047,875.92x = 209,526,497,341.56 × 72,513,609,890.64
  4. Step 4: Simplify right side
    139,734,047,875.92x = 15,193,522,689,978,100,875,264
  5. Step 5: Solve for x
    x = 15,193,522,689,978,100,875,264/139,734,047,875.92
  6. Step 6: Final answer
    x = 108,731,715,146.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.