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Finding the Fourth Proportional to 115,432.40, 173,164.80 and 36,538.40

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Solution

The fourth proportional to 115,432.40, 173,164.80 and 36,538.40 is: 54,812.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,432.40 : 173,164.80 = 36,538.40 : x
  2. Step 2: Convert to fraction form
    115,432.40/173,164.80 = 36,538.40/x
  3. Step 3: Cross multiply
    115,432.40x = 173,164.80 × 36,538.40
  4. Step 4: Simplify right side
    115,432.40x = 6,327,164,728.32
  5. Step 5: Solve for x
    x = 6,327,164,728.32/115,432.40
  6. Step 6: Final answer
    x = 54,812.73

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1.5x scale

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.