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Finding the Fourth Proportional to 144,666.80, 216,935.40 and 65,740.40

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Solution

The fourth proportional to 144,666.80, 216,935.40 and 65,740.40 is: 98,581.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,666.80 : 216,935.40 = 65,740.40 : x
  2. Step 2: Convert to fraction form
    144,666.80/216,935.40 = 65,740.40/x
  3. Step 3: Cross multiply
    144,666.80x = 216,935.40 × 65,740.40
  4. Step 4: Simplify right side
    144,666.80x = 14,261,419,970.16
  5. Step 5: Solve for x
    x = 14,261,419,970.16/144,666.80
  6. Step 6: Final answer
    x = 98,581.15

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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.