Home / 88,681.12-122,280.24-72,498.40

Finding the Fourth Proportional to 88,681.12, 122,280.24 and 72,498.40

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Solution

The fourth proportional to 88,681.12, 122,280.24 and 72,498.40 is: 99,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,681.12 : 122,280.24 = 72,498.40 : x
  2. Step 2: Convert to fraction form
    88,681.12/122,280.24 = 72,498.40/x
  3. Step 3: Cross multiply
    88,681.12x = 122,280.24 × 72,498.40
  4. Step 4: Simplify right side
    88,681.12x = 8,865,121,751.62
  5. Step 5: Solve for x
    x = 8,865,121,751.62/88,681.12
  6. Step 6: Final answer
    x = 99,966.28

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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.