Home / 107,025.12-147,711.60-81,490.32

Finding the Fourth Proportional to 107,025.12, 147,711.60 and 81,490.32

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Solution

The fourth proportional to 107,025.12, 147,711.60 and 81,490.32 is: 112,469.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,025.12 : 147,711.60 = 81,490.32 : x
  2. Step 2: Convert to fraction form
    107,025.12/147,711.60 = 81,490.32/x
  3. Step 3: Cross multiply
    107,025.12x = 147,711.60 × 81,490.32
  4. Step 4: Simplify right side
    107,025.12x = 12,037,065,551.71
  5. Step 5: Solve for x
    x = 12,037,065,551.71/107,025.12
  6. Step 6: Final answer
    x = 112,469.54

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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.