Home / 153,967.38-212,462.86-85,979.04

Finding the Fourth Proportional to 153,967.38, 212,462.86 and 85,979.04

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Solution

The fourth proportional to 153,967.38, 212,462.86 and 85,979.04 is: 118,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,967.38 : 212,462.86 = 85,979.04 : x
  2. Step 2: Convert to fraction form
    153,967.38/212,462.86 = 85,979.04/x
  3. Step 3: Cross multiply
    153,967.38x = 212,462.86 × 85,979.04
  4. Step 4: Simplify right side
    153,967.38x = 18,267,352,738.45
  5. Step 5: Solve for x
    x = 18,267,352,738.45/153,967.38
  6. Step 6: Final answer
    x = 118,644.30

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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.