Home / 112,432.60-155,162.96-64,693.20

Finding the Fourth Proportional to 112,432.60, 155,162.96 and 64,693.20

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Solution

The fourth proportional to 112,432.60, 155,162.96 and 64,693.20 is: 89,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,432.60 : 155,162.96 = 64,693.20 : x
  2. Step 2: Convert to fraction form
    112,432.60/155,162.96 = 64,693.20/x
  3. Step 3: Cross multiply
    112,432.60x = 155,162.96 × 64,693.20
  4. Step 4: Simplify right side
    112,432.60x = 10,037,988,403.87
  5. Step 5: Solve for x
    x = 10,037,988,403.87/112,432.60
  6. Step 6: Final answer
    x = 89,280.05

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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.