Home / 82,853.40-124,280.10-76,438.20

Finding the Fourth Proportional to 82,853.40, 124,280.10 and 76,438.20

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Solution

The fourth proportional to 82,853.40, 124,280.10 and 76,438.20 is: 114,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,853.40 : 124,280.10 = 76,438.20 : x
  2. Step 2: Convert to fraction form
    82,853.40/124,280.10 = 76,438.20/x
  3. Step 3: Cross multiply
    82,853.40x = 124,280.10 × 76,438.20
  4. Step 4: Simplify right side
    82,853.40x = 9,499,747,139.82
  5. Step 5: Solve for x
    x = 9,499,747,139.82/82,853.40
  6. Step 6: Final answer
    x = 114,657.30

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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.