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Finding the Fourth Proportional to 136,471.60, 204,457.92 and 98,938.72

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Solution

The fourth proportional to 136,471.60, 204,457.92 and 98,938.72 is: 148,227.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,471.60 : 204,457.92 = 98,938.72 : x
  2. Step 2: Convert to fraction form
    136,471.60/204,457.92 = 98,938.72/x
  3. Step 3: Cross multiply
    136,471.60x = 204,457.92 × 98,938.72
  4. Step 4: Simplify right side
    136,471.60x = 20,228,804,898.66
  5. Step 5: Solve for x
    x = 20,228,804,898.66/136,471.60
  6. Step 6: Final answer
    x = 148,227.21

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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.