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Finding the Fourth Proportional to 124.32, 170.59 and 113.32

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Solution

The fourth proportional to 124.32, 170.59 and 113.32 is: 155.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.32 : 170.59 = 113.32 : x
  2. Step 2: Convert to fraction form
    124.32/170.59 = 113.32/x
  3. Step 3: Cross multiply
    124.32x = 170.59 × 113.32
  4. Step 4: Simplify right side
    124.32x = 19,331.26
  5. Step 5: Solve for x
    x = 19,331.26/124.32
  6. Step 6: Final answer
    x = 155.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.