Home / 113,711.85-170,731.80-85,827.60

Finding the Fourth Proportional to 113,711.85, 170,731.80 and 85,827.60

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Solution

The fourth proportional to 113,711.85, 170,731.80 and 85,827.60 is: 128,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,711.85 : 170,731.80 = 85,827.60 : x
  2. Step 2: Convert to fraction form
    113,711.85/170,731.80 = 85,827.60/x
  3. Step 3: Cross multiply
    113,711.85x = 170,731.80 × 85,827.60
  4. Step 4: Simplify right side
    113,711.85x = 14,653,500,637.68
  5. Step 5: Solve for x
    x = 14,653,500,637.68/113,711.85
  6. Step 6: Final answer
    x = 128,865.20

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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.