Home / 477,126.10-715,688.70-122,139.55

Finding the Fourth Proportional to 477,126.10, 715,688.70 and 122,139.55

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Solution

The fourth proportional to 477,126.10, 715,688.70 and 122,139.55 is: 183,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,126.10 : 715,688.70 = 122,139.55 : x
  2. Step 2: Convert to fraction form
    477,126.10/715,688.70 = 122,139.55/x
  3. Step 3: Cross multiply
    477,126.10x = 715,688.70 × 122,139.55
  4. Step 4: Simplify right side
    477,126.10x = 87,413,895,758.09
  5. Step 5: Solve for x
    x = 87,413,895,758.09/477,126.10
  6. Step 6: Final answer
    x = 183,209.21

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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.