Home / 88,909.95-122,740.34-68,721.20

Finding the Fourth Proportional to 88,909.95, 122,740.34 and 68,721.20

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Solution

The fourth proportional to 88,909.95, 122,740.34 and 68,721.20 is: 94,869.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,909.95 : 122,740.34 = 68,721.20 : x
  2. Step 2: Convert to fraction form
    88,909.95/122,740.34 = 68,721.20/x
  3. Step 3: Cross multiply
    88,909.95x = 122,740.34 × 68,721.20
  4. Step 4: Simplify right side
    88,909.95x = 8,434,863,931.86
  5. Step 5: Solve for x
    x = 8,434,863,931.86/88,909.95
  6. Step 6: Final answer
    x = 94,869.75

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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.