Home / 113,890.20-170,432.10-99,259.80

Finding the Fourth Proportional to 113,890.20, 170,432.10 and 99,259.80

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Solution

The fourth proportional to 113,890.20, 170,432.10 and 99,259.80 is: 148,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,890.20 : 170,432.10 = 99,259.80 : x
  2. Step 2: Convert to fraction form
    113,890.20/170,432.10 = 99,259.80/x
  3. Step 3: Cross multiply
    113,890.20x = 170,432.10 × 99,259.80
  4. Step 4: Simplify right side
    113,890.20x = 16,917,056,159.58
  5. Step 5: Solve for x
    x = 16,917,056,159.58/113,890.20
  6. Step 6: Final answer
    x = 148,538.30

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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.