Home / 102,526.40-153,789.60-91,812.80

Finding the Fourth Proportional to 102,526.40, 153,789.60 and 91,812.80

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Solution

The fourth proportional to 102,526.40, 153,789.60 and 91,812.80 is: 137,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,526.40 : 153,789.60 = 91,812.80 : x
  2. Step 2: Convert to fraction form
    102,526.40/153,789.60 = 91,812.80/x
  3. Step 3: Cross multiply
    102,526.40x = 153,789.60 × 91,812.80
  4. Step 4: Simplify right side
    102,526.40x = 14,119,853,786.88
  5. Step 5: Solve for x
    x = 14,119,853,786.88/102,526.40
  6. Step 6: Final answer
    x = 137,719.20

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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.