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Finding the Fourth Proportional to 115,445.76, 159,338.88 and 67,724.16

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Solution

The fourth proportional to 115,445.76, 159,338.88 and 67,724.16 is: 93,473.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,445.76 : 159,338.88 = 67,724.16 : x
  2. Step 2: Convert to fraction form
    115,445.76/159,338.88 = 67,724.16/x
  3. Step 3: Cross multiply
    115,445.76x = 159,338.88 × 67,724.16
  4. Step 4: Simplify right side
    115,445.76x = 10,791,091,803.34
  5. Step 5: Solve for x
    x = 10,791,091,803.34/115,445.76
  6. Step 6: Final answer
    x = 93,473.26

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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.