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Finding the Fourth Proportional to 145,854.21, 218,839.64 and 62,806.53

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Solution

The fourth proportional to 145,854.21, 218,839.64 and 62,806.53 is: 94,234.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,854.21 : 218,839.64 = 62,806.53 : x
  2. Step 2: Convert to fraction form
    145,854.21/218,839.64 = 62,806.53/x
  3. Step 3: Cross multiply
    145,854.21x = 218,839.64 × 62,806.53
  4. Step 4: Simplify right side
    145,854.21x = 13,744,558,100.82
  5. Step 5: Solve for x
    x = 13,744,558,100.82/145,854.21
  6. Step 6: Final answer
    x = 94,234.91

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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.