Home / 103,890.10-155,937.55-51,358.90

Finding the Fourth Proportional to 103,890.10, 155,937.55 and 51,358.90

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Solution

The fourth proportional to 103,890.10, 155,937.55 and 51,358.90 is: 77,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,890.10 : 155,937.55 = 51,358.90 : x
  2. Step 2: Convert to fraction form
    103,890.10/155,937.55 = 51,358.90/x
  3. Step 3: Cross multiply
    103,890.10x = 155,937.55 × 51,358.90
  4. Step 4: Simplify right side
    103,890.10x = 8,008,781,036.70
  5. Step 5: Solve for x
    x = 8,008,781,036.70/103,890.10
  6. Step 6: Final answer
    x = 77,088.97

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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.