Home / 88,108.32-121,421.88-86,489.04

Finding the Fourth Proportional to 88,108.32, 121,421.88 and 86,489.04

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Solution

The fourth proportional to 88,108.32, 121,421.88 and 86,489.04 is: 119,190.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,108.32 : 121,421.88 = 86,489.04 : x
  2. Step 2: Convert to fraction form
    88,108.32/121,421.88 = 86,489.04/x
  3. Step 3: Cross multiply
    88,108.32x = 121,421.88 × 86,489.04
  4. Step 4: Simplify right side
    88,108.32x = 10,501,661,836.20
  5. Step 5: Solve for x
    x = 10,501,661,836.20/88,108.32
  6. Step 6: Final answer
    x = 119,190.35

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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.