Home / 127,475.64-191,305.12-85,436.08

Finding the Fourth Proportional to 127,475.64, 191,305.12 and 85,436.08

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Solution

The fourth proportional to 127,475.64, 191,305.12 and 85,436.08 is: 128,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,475.64 : 191,305.12 = 85,436.08 : x
  2. Step 2: Convert to fraction form
    127,475.64/191,305.12 = 85,436.08/x
  3. Step 3: Cross multiply
    127,475.64x = 191,305.12 × 85,436.08
  4. Step 4: Simplify right side
    127,475.64x = 16,344,359,536.73
  5. Step 5: Solve for x
    x = 16,344,359,536.73/127,475.64
  6. Step 6: Final answer
    x = 128,215.55

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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.