Home / 127,392.12-191,115.20-43,148.20

Finding the Fourth Proportional to 127,392.12, 191,115.20 and 43,148.20

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Solution

The fourth proportional to 127,392.12, 191,115.20 and 43,148.20 is: 64,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,392.12 : 191,115.20 = 43,148.20 : x
  2. Step 2: Convert to fraction form
    127,392.12/191,115.20 = 43,148.20/x
  3. Step 3: Cross multiply
    127,392.12x = 191,115.20 × 43,148.20
  4. Step 4: Simplify right side
    127,392.12x = 8,246,276,872.64
  5. Step 5: Solve for x
    x = 8,246,276,872.64/127,392.12
  6. Step 6: Final answer
    x = 64,731.45

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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.