Home / 153,942.72-212,436.96-86,874.24

Finding the Fourth Proportional to 153,942.72, 212,436.96 and 86,874.24

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Solution

The fourth proportional to 153,942.72, 212,436.96 and 86,874.24 is: 119,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,942.72 : 212,436.96 = 86,874.24 : x
  2. Step 2: Convert to fraction form
    153,942.72/212,436.96 = 86,874.24/x
  3. Step 3: Cross multiply
    153,942.72x = 212,436.96 × 86,874.24
  4. Step 4: Simplify right side
    153,942.72x = 18,455,299,447.91
  5. Step 5: Solve for x
    x = 18,455,299,447.91/153,942.72
  6. Step 6: Final answer
    x = 119,884.20

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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.