Home / 90,011.40-135,017.10-88,456.20

Finding the Fourth Proportional to 90,011.40, 135,017.10 and 88,456.20

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Solution

The fourth proportional to 90,011.40, 135,017.10 and 88,456.20 is: 132,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,011.40 : 135,017.10 = 88,456.20 : x
  2. Step 2: Convert to fraction form
    90,011.40/135,017.10 = 88,456.20/x
  3. Step 3: Cross multiply
    90,011.40x = 135,017.10 × 88,456.20
  4. Step 4: Simplify right side
    90,011.40x = 11,943,099,601.02
  5. Step 5: Solve for x
    x = 11,943,099,601.02/90,011.40
  6. Step 6: Final answer
    x = 132,684.30

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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.