Home / 139,968,006.05-209,952,009.08-103,688,300.45

Finding the Fourth Proportional to 139,968,006.05, 209,952,009.08 and 103,688,300.45

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Solution

The fourth proportional to 139,968,006.05, 209,952,009.08 and 103,688,300.45 is: 155,532,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,006.05 : 209,952,009.08 = 103,688,300.45 : x
  2. Step 2: Convert to fraction form
    139,968,006.05/209,952,009.08 = 103,688,300.45/x
  3. Step 3: Cross multiply
    139,968,006.05x = 209,952,009.08 × 103,688,300.45
  4. Step 4: Simplify right side
    139,968,006.05x = 21,769,566,997,568,172
  5. Step 5: Solve for x
    x = 21,769,566,997,568,172/139,968,006.05
  6. Step 6: Final answer
    x = 155,532,450.68

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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.