Home / 130,146.50-179,600.90-72,785.18

Finding the Fourth Proportional to 130,146.50, 179,600.90 and 72,785.18

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Solution

The fourth proportional to 130,146.50, 179,600.90 and 72,785.18 is: 100,442.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,146.50 : 179,600.90 = 72,785.18 : x
  2. Step 2: Convert to fraction form
    130,146.50/179,600.90 = 72,785.18/x
  3. Step 3: Cross multiply
    130,146.50x = 179,600.90 × 72,785.18
  4. Step 4: Simplify right side
    130,146.50x = 13,072,282,572.73
  5. Step 5: Solve for x
    x = 13,072,282,572.73/130,146.50
  6. Step 6: Final answer
    x = 100,442.83

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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.