Home / 90,838.31-125,226.96-63,897.20

Finding the Fourth Proportional to 90,838.31, 125,226.96 and 63,897.20

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Solution

The fourth proportional to 90,838.31, 125,226.96 and 63,897.20 is: 88,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,838.31 : 125,226.96 = 63,897.20 : x
  2. Step 2: Convert to fraction form
    90,838.31/125,226.96 = 63,897.20/x
  3. Step 3: Cross multiply
    90,838.31x = 125,226.96 × 63,897.20
  4. Step 4: Simplify right side
    90,838.31x = 8,001,652,371.84
  5. Step 5: Solve for x
    x = 8,001,652,371.84/90,838.31
  6. Step 6: Final answer
    x = 88,086.76

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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.