Home / 145,087.20-217,630.80-91,943.10

Finding the Fourth Proportional to 145,087.20, 217,630.80 and 91,943.10

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Solution

The fourth proportional to 145,087.20, 217,630.80 and 91,943.10 is: 137,914.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,087.20 : 217,630.80 = 91,943.10 : x
  2. Step 2: Convert to fraction form
    145,087.20/217,630.80 = 91,943.10/x
  3. Step 3: Cross multiply
    145,087.20x = 217,630.80 × 91,943.10
  4. Step 4: Simplify right side
    145,087.20x = 20,009,650,407.48
  5. Step 5: Solve for x
    x = 20,009,650,407.48/145,087.20
  6. Step 6: Final answer
    x = 137,914.65

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Similar ratio
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1.5x scale

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.