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Finding the Fourth Proportional to 189,543.80, 261,475.92 and 113,008.92

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Solution

The fourth proportional to 189,543.80, 261,475.92 and 113,008.92 is: 155,895.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,543.80 : 261,475.92 = 113,008.92 : x
  2. Step 2: Convert to fraction form
    189,543.80/261,475.92 = 113,008.92/x
  3. Step 3: Cross multiply
    189,543.80x = 261,475.92 × 113,008.92
  4. Step 4: Simplify right side
    189,543.80x = 29,549,111,325.21
  5. Step 5: Solve for x
    x = 29,549,111,325.21/189,543.80
  6. Step 6: Final answer
    x = 155,895.95

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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.