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Finding the Fourth Proportional to 145,559.52, 218,265.42 and 66,606.09

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Solution

The fourth proportional to 145,559.52, 218,265.42 and 66,606.09 is: 99,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,559.52 : 218,265.42 = 66,606.09 : x
  2. Step 2: Convert to fraction form
    145,559.52/218,265.42 = 66,606.09/x
  3. Step 3: Cross multiply
    145,559.52x = 218,265.42 × 66,606.09
  4. Step 4: Simplify right side
    145,559.52x = 14,537,806,208.41
  5. Step 5: Solve for x
    x = 14,537,806,208.41/145,559.52
  6. Step 6: Final answer
    x = 99,875.34

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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.