Home / 139,143,555.20-208,516,267.20-102,465,718.40

Finding the Fourth Proportional to 139,143,555.20, 208,516,267.20 and 102,465,718.40

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Solution

The fourth proportional to 139,143,555.20, 208,516,267.20 and 102,465,718.40 is: 153,551,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,143,555.20 : 208,516,267.20 = 102,465,718.40 : x
  2. Step 2: Convert to fraction form
    139,143,555.20/208,516,267.20 = 102,465,718.40/x
  3. Step 3: Cross multiply
    139,143,555.20x = 208,516,267.20 × 102,465,718.40
  4. Step 4: Simplify right side
    139,143,555.20x = 21,365,769,116,734,356
  5. Step 5: Solve for x
    x = 21,365,769,116,734,356/139,143,555.20
  6. Step 6: Final answer
    x = 153,551,985.11

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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.