Home / 88,685.12-122,286.24-72,501.92

Finding the Fourth Proportional to 88,685.12, 122,286.24 and 72,501.92

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Solution

The fourth proportional to 88,685.12, 122,286.24 and 72,501.92 is: 99,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,685.12 : 122,286.24 = 72,501.92 : x
  2. Step 2: Convert to fraction form
    88,685.12/122,286.24 = 72,501.92/x
  3. Step 3: Cross multiply
    88,685.12x = 122,286.24 × 72,501.92
  4. Step 4: Simplify right side
    88,685.12x = 8,865,987,189.58
  5. Step 5: Solve for x
    x = 8,865,987,189.58/88,685.12
  6. Step 6: Final answer
    x = 99,971.53

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1.5x scale

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.