Home / 138,816,097.20-208,224,145.80-70,791,649.20

Finding the Fourth Proportional to 138,816,097.20, 208,224,145.80 and 70,791,649.20

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Solution

The fourth proportional to 138,816,097.20, 208,224,145.80 and 70,791,649.20 is: 106,187,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,816,097.20 : 208,224,145.80 = 70,791,649.20 : x
  2. Step 2: Convert to fraction form
    138,816,097.20/208,224,145.80 = 70,791,649.20/x
  3. Step 3: Cross multiply
    138,816,097.20x = 208,224,145.80 × 70,791,649.20
  4. Step 4: Simplify right side
    138,816,097.20x = 14,740,530,684,443,254
  5. Step 5: Solve for x
    x = 14,740,530,684,443,254/138,816,097.20
  6. Step 6: Final answer
    x = 106,187,473.80

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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.