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Finding the Fourth Proportional to 130,572.60, 195,923.70 and 74,455.80

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Solution

The fourth proportional to 130,572.60, 195,923.70 and 74,455.80 is: 111,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,572.60 : 195,923.70 = 74,455.80 : x
  2. Step 2: Convert to fraction form
    130,572.60/195,923.70 = 74,455.80/x
  3. Step 3: Cross multiply
    130,572.60x = 195,923.70 × 74,455.80
  4. Step 4: Simplify right side
    130,572.60x = 14,587,655,822.46
  5. Step 5: Solve for x
    x = 14,587,655,822.46/130,572.60
  6. Step 6: Final answer
    x = 111,720.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.