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Finding the Fourth Proportional to 105,080.30, 145,032.39 and 64,251.41

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Solution

The fourth proportional to 105,080.30, 145,032.39 and 64,251.41 is: 88,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,080.30 : 145,032.39 = 64,251.41 : x
  2. Step 2: Convert to fraction form
    105,080.30/145,032.39 = 64,251.41/x
  3. Step 3: Cross multiply
    105,080.30x = 145,032.39 × 64,251.41
  4. Step 4: Simplify right side
    105,080.30x = 9,318,535,643.82
  5. Step 5: Solve for x
    x = 9,318,535,643.82/105,080.30
  6. Step 6: Final answer
    x = 88,680.14

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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.