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Finding the Fourth Proportional to 145,707.14, 218,485.53 and 66,753.71

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Solution

The fourth proportional to 145,707.14, 218,485.53 and 66,753.71 is: 100,096.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,707.14 : 218,485.53 = 66,753.71 : x
  2. Step 2: Convert to fraction form
    145,707.14/218,485.53 = 66,753.71/x
  3. Step 3: Cross multiply
    145,707.14x = 218,485.53 × 66,753.71
  4. Step 4: Simplify right side
    145,707.14x = 14,584,719,708.82
  5. Step 5: Solve for x
    x = 14,584,719,708.82/145,707.14
  6. Step 6: Final answer
    x = 100,096.12

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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.