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Finding the Fourth Proportional to 101,802.40, 140,445.84 and 68,279.20

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Solution

The fourth proportional to 101,802.40, 140,445.84 and 68,279.20 is: 94,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,802.40 : 140,445.84 = 68,279.20 : x
  2. Step 2: Convert to fraction form
    101,802.40/140,445.84 = 68,279.20/x
  3. Step 3: Cross multiply
    101,802.40x = 140,445.84 × 68,279.20
  4. Step 4: Simplify right side
    101,802.40x = 9,589,529,598.53
  5. Step 5: Solve for x
    x = 9,589,529,598.53/101,802.40
  6. Step 6: Final answer
    x = 94,197.48

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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.