Home / 170,909.16-235,853.30-99,331.08

Finding the Fourth Proportional to 170,909.16, 235,853.30 and 99,331.08

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Solution

The fourth proportional to 170,909.16, 235,853.30 and 99,331.08 is: 137,076.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,909.16 : 235,853.30 = 99,331.08 : x
  2. Step 2: Convert to fraction form
    170,909.16/235,853.30 = 99,331.08/x
  3. Step 3: Cross multiply
    170,909.16x = 235,853.30 × 99,331.08
  4. Step 4: Simplify right side
    170,909.16x = 23,427,563,010.56
  5. Step 5: Solve for x
    x = 23,427,563,010.56/170,909.16
  6. Step 6: Final answer
    x = 137,076.11

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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.