Home / 102,546.40-153,819.60-77,663.20

Finding the Fourth Proportional to 102,546.40, 153,819.60 and 77,663.20

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Solution

The fourth proportional to 102,546.40, 153,819.60 and 77,663.20 is: 116,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,546.40 : 153,819.60 = 77,663.20 : x
  2. Step 2: Convert to fraction form
    102,546.40/153,819.60 = 77,663.20/x
  3. Step 3: Cross multiply
    102,546.40x = 153,819.60 × 77,663.20
  4. Step 4: Simplify right side
    102,546.40x = 11,946,122,358.72
  5. Step 5: Solve for x
    x = 11,946,122,358.72/102,546.40
  6. Step 6: Final answer
    x = 116,494.80

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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.