Home / 92,280.20-138,128.70-72,451.40

Finding the Fourth Proportional to 92,280.20, 138,128.70 and 72,451.40

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Solution

The fourth proportional to 92,280.20, 138,128.70 and 72,451.40 is: 108,448.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,280.20 : 138,128.70 = 72,451.40 : x
  2. Step 2: Convert to fraction form
    92,280.20/138,128.70 = 72,451.40/x
  3. Step 3: Cross multiply
    92,280.20x = 138,128.70 × 72,451.40
  4. Step 4: Simplify right side
    92,280.20x = 10,007,617,695.18
  5. Step 5: Solve for x
    x = 10,007,617,695.18/92,280.20
  6. Step 6: Final answer
    x = 108,448.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.