Home / 103,138,121.61-142,330,681.31-56,731,906.17

Finding the Fourth Proportional to 103,138,121.61, 142,330,681.31 and 56,731,906.17

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Solution

The fourth proportional to 103,138,121.61, 142,330,681.31 and 56,731,906.17 is: 78,290,070.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,138,121.61 : 142,330,681.31 = 56,731,906.17 : x
  2. Step 2: Convert to fraction form
    103,138,121.61/142,330,681.31 = 56,731,906.17/x
  3. Step 3: Cross multiply
    103,138,121.61x = 142,330,681.31 × 56,731,906.17
  4. Step 4: Simplify right side
    103,138,121.61x = 8,074,690,856,907,434
  5. Step 5: Solve for x
    x = 8,074,690,856,907,434/103,138,121.61
  6. Step 6: Final answer
    x = 78,290,070.93

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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.