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Finding the Fourth Proportional to 113,443.08, 156,549.90 and 63,142.08

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Solution

The fourth proportional to 113,443.08, 156,549.90 and 63,142.08 is: 87,135.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,443.08 : 156,549.90 = 63,142.08 : x
  2. Step 2: Convert to fraction form
    113,443.08/156,549.90 = 63,142.08/x
  3. Step 3: Cross multiply
    113,443.08x = 156,549.90 × 63,142.08
  4. Step 4: Simplify right side
    113,443.08x = 9,884,886,309.79
  5. Step 5: Solve for x
    x = 9,884,886,309.79/113,443.08
  6. Step 6: Final answer
    x = 87,135.21

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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.