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Finding the Fourth Proportional to 130,500.95, 180,105.80 and 73,149.71

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Solution

The fourth proportional to 130,500.95, 180,105.80 and 73,149.71 is: 100,954.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,500.95 : 180,105.80 = 73,149.71 : x
  2. Step 2: Convert to fraction form
    130,500.95/180,105.80 = 73,149.71/x
  3. Step 3: Cross multiply
    130,500.95x = 180,105.80 × 73,149.71
  4. Step 4: Simplify right side
    130,500.95x = 13,174,685,773.04
  5. Step 5: Solve for x
    x = 13,174,685,773.04/130,500.95
  6. Step 6: Final answer
    x = 100,954.72

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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.