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Finding the Fourth Proportional to 144,263.61, 216,397.85 and 65,378.52

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Solution

The fourth proportional to 144,263.61, 216,397.85 and 65,378.52 is: 98,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,263.61 : 216,397.85 = 65,378.52 : x
  2. Step 2: Convert to fraction form
    144,263.61/216,397.85 = 65,378.52/x
  3. Step 3: Cross multiply
    144,263.61x = 216,397.85 × 65,378.52
  4. Step 4: Simplify right side
    144,263.61x = 14,147,770,837.29
  5. Step 5: Solve for x
    x = 14,147,770,837.29/144,263.61
  6. Step 6: Final answer
    x = 98,068.88

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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.