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Finding the Fourth Proportional to 108,860.80, 150,244.30 and 66,443.98

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Solution

The fourth proportional to 108,860.80, 150,244.30 and 66,443.98 is: 91,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,860.80 : 150,244.30 = 66,443.98 : x
  2. Step 2: Convert to fraction form
    108,860.80/150,244.30 = 66,443.98/x
  3. Step 3: Cross multiply
    108,860.80x = 150,244.30 × 66,443.98
  4. Step 4: Simplify right side
    108,860.80x = 9,982,829,264.31
  5. Step 5: Solve for x
    x = 9,982,829,264.31/108,860.80
  6. Step 6: Final answer
    x = 91,702.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.