Home / 138,772.16-208,179.92-45,256.16

Finding the Fourth Proportional to 138,772.16, 208,179.92 and 45,256.16

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Solution

The fourth proportional to 138,772.16, 208,179.92 and 45,256.16 is: 67,891.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,772.16 : 208,179.92 = 45,256.16 : x
  2. Step 2: Convert to fraction form
    138,772.16/208,179.92 = 45,256.16/x
  3. Step 3: Cross multiply
    138,772.16x = 208,179.92 × 45,256.16
  4. Step 4: Simplify right side
    138,772.16x = 9,421,423,768.31
  5. Step 5: Solve for x
    x = 9,421,423,768.31/138,772.16
  6. Step 6: Final answer
    x = 67,891.31

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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.