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Finding the Fourth Proportional to 129,955.82, 179,349.46 and 103,318.16

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Solution

The fourth proportional to 129,955.82, 179,349.46 and 103,318.16 is: 142,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,955.82 : 179,349.46 = 103,318.16 : x
  2. Step 2: Convert to fraction form
    129,955.82/179,349.46 = 103,318.16/x
  3. Step 3: Cross multiply
    129,955.82x = 179,349.46 × 103,318.16
  4. Step 4: Simplify right side
    129,955.82x = 18,530,056,204.19
  5. Step 5: Solve for x
    x = 18,530,056,204.19/129,955.82
  6. Step 6: Final answer
    x = 142,587.35

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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.