Home / 132,538.20-198,807.30-90,547.80

Finding the Fourth Proportional to 132,538.20, 198,807.30 and 90,547.80

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Solution

The fourth proportional to 132,538.20, 198,807.30 and 90,547.80 is: 135,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,538.20 : 198,807.30 = 90,547.80 : x
  2. Step 2: Convert to fraction form
    132,538.20/198,807.30 = 90,547.80/x
  3. Step 3: Cross multiply
    132,538.20x = 198,807.30 × 90,547.80
  4. Step 4: Simplify right side
    132,538.20x = 18,001,563,638.94
  5. Step 5: Solve for x
    x = 18,001,563,638.94/132,538.20
  6. Step 6: Final answer
    x = 135,821.70

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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.