Home / 103,236,368.72-142,469,948.05-56,191,169.95

Finding the Fourth Proportional to 103,236,368.72, 142,469,948.05 and 56,191,169.95

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Solution

The fourth proportional to 103,236,368.72, 142,469,948.05 and 56,191,169.95 is: 77,545,860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,236,368.72 : 142,469,948.05 = 56,191,169.95 : x
  2. Step 2: Convert to fraction form
    103,236,368.72/142,469,948.05 = 56,191,169.95/x
  3. Step 3: Cross multiply
    103,236,368.72x = 142,469,948.05 × 56,191,169.95
  4. Step 4: Simplify right side
    103,236,368.72x = 8,005,553,063,148,569
  5. Step 5: Solve for x
    x = 8,005,553,063,148,569/103,236,368.72
  6. Step 6: Final answer
    x = 77,545,860.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.