Home / 124,877,538.80-172,310,446.46-78,434,712.98

Finding the Fourth Proportional to 124,877,538.80, 172,310,446.46 and 78,434,712.98

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Solution

The fourth proportional to 124,877,538.80, 172,310,446.46 and 78,434,712.98 is: 108,226,992.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,877,538.80 : 172,310,446.46 = 78,434,712.98 : x
  2. Step 2: Convert to fraction form
    124,877,538.80/172,310,446.46 = 78,434,712.98/x
  3. Step 3: Cross multiply
    124,877,538.80x = 172,310,446.46 × 78,434,712.98
  4. Step 4: Simplify right side
    124,877,538.80x = 13,515,120,411,545,758
  5. Step 5: Solve for x
    x = 13,515,120,411,545,758/124,877,538.80
  6. Step 6: Final answer
    x = 108,226,992.15

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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.