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Finding the Fourth Proportional to 101,545, 140,112.66 and 65,730.04

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Solution

The fourth proportional to 101,545, 140,112.66 and 65,730.04 is: 90,694.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,545 : 140,112.66 = 65,730.04 : x
  2. Step 2: Convert to fraction form
    101,545/140,112.66 = 65,730.04/x
  3. Step 3: Cross multiply
    101,545x = 140,112.66 × 65,730.04
  4. Step 4: Simplify right side
    101,545x = 9,209,610,746.31
  5. Step 5: Solve for x
    x = 9,209,610,746.31/101,545
  6. Step 6: Final answer
    x = 90,694.87

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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.