Home / 153,853.12-212,302.92-89,305.23

Finding the Fourth Proportional to 153,853.12, 212,302.92 and 89,305.23

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Solution

The fourth proportional to 153,853.12, 212,302.92 and 89,305.23 is: 123,232.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,853.12 : 212,302.92 = 89,305.23 : x
  2. Step 2: Convert to fraction form
    153,853.12/212,302.92 = 89,305.23/x
  3. Step 3: Cross multiply
    153,853.12x = 212,302.92 × 89,305.23
  4. Step 4: Simplify right side
    153,853.12x = 18,959,762,231.30
  5. Step 5: Solve for x
    x = 18,959,762,231.30/153,853.12
  6. Step 6: Final answer
    x = 123,232.87

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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.