Home / 129,233.04-178,349.76-72,648.06

Finding the Fourth Proportional to 129,233.04, 178,349.76 and 72,648.06

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Solution

The fourth proportional to 129,233.04, 178,349.76 and 72,648.06 is: 100,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,233.04 : 178,349.76 = 72,648.06 : x
  2. Step 2: Convert to fraction form
    129,233.04/178,349.76 = 72,648.06/x
  3. Step 3: Cross multiply
    129,233.04x = 178,349.76 × 72,648.06
  4. Step 4: Simplify right side
    129,233.04x = 12,956,764,065.47
  5. Step 5: Solve for x
    x = 12,956,764,065.47/129,233.04
  6. Step 6: Final answer
    x = 100,258.91

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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.