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Finding the Fourth Proportional to 113,948.34, 157,279.34 and 65,555.80

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Solution

The fourth proportional to 113,948.34, 157,279.34 and 65,555.80 is: 90,484.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,948.34 : 157,279.34 = 65,555.80 : x
  2. Step 2: Convert to fraction form
    113,948.34/157,279.34 = 65,555.80/x
  3. Step 3: Cross multiply
    113,948.34x = 157,279.34 × 65,555.80
  4. Step 4: Simplify right side
    113,948.34x = 10,310,572,957.17
  5. Step 5: Solve for x
    x = 10,310,572,957.17/113,948.34
  6. Step 6: Final answer
    x = 90,484.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.