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Finding the Fourth Proportional to 153,869.60, 230,847.60 and 74,986.40

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Solution

The fourth proportional to 153,869.60, 230,847.60 and 74,986.40 is: 112,500.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,869.60 : 230,847.60 = 74,986.40 : x
  2. Step 2: Convert to fraction form
    153,869.60/230,847.60 = 74,986.40/x
  3. Step 3: Cross multiply
    153,869.60x = 230,847.60 × 74,986.40
  4. Step 4: Simplify right side
    153,869.60x = 17,310,430,472.64
  5. Step 5: Solve for x
    x = 17,310,430,472.64/153,869.60
  6. Step 6: Final answer
    x = 112,500.65

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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.