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Finding the Fourth Proportional to 145,536,562.80, 218,304,844.20 and 131,187,655.80

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Solution

The fourth proportional to 145,536,562.80, 218,304,844.20 and 131,187,655.80 is: 196,781,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,536,562.80 : 218,304,844.20 = 131,187,655.80 : x
  2. Step 2: Convert to fraction form
    145,536,562.80/218,304,844.20 = 131,187,655.80/x
  3. Step 3: Cross multiply
    145,536,562.80x = 218,304,844.20 × 131,187,655.80
  4. Step 4: Simplify right side
    145,536,562.80x = 28,638,900,760,382,224
  5. Step 5: Solve for x
    x = 28,638,900,760,382,224/145,536,562.80
  6. Step 6: Final answer
    x = 196,781,483.70

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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.