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Finding the Fourth Proportional to 139,642,761.60, 209,558,620.80 and 62,926,300.80

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Solution

The fourth proportional to 139,642,761.60, 209,558,620.80 and 62,926,300.80 is: 94,432,025.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,642,761.60 : 209,558,620.80 = 62,926,300.80 : x
  2. Step 2: Convert to fraction form
    139,642,761.60/209,558,620.80 = 62,926,300.80/x
  3. Step 3: Cross multiply
    139,642,761.60x = 209,558,620.80 × 62,926,300.80
  4. Step 4: Simplify right side
    139,642,761.60x = 13,186,748,807,693,936
  5. Step 5: Solve for x
    x = 13,186,748,807,693,936/139,642,761.60
  6. Step 6: Final answer
    x = 94,432,025.38

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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.