Home / 158,642.31-218,896.08-90,680.82

Finding the Fourth Proportional to 158,642.31, 218,896.08 and 90,680.82

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Solution

The fourth proportional to 158,642.31, 218,896.08 and 90,680.82 is: 125,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,642.31 : 218,896.08 = 90,680.82 : x
  2. Step 2: Convert to fraction form
    158,642.31/218,896.08 = 90,680.82/x
  3. Step 3: Cross multiply
    158,642.31x = 218,896.08 × 90,680.82
  4. Step 4: Simplify right side
    158,642.31x = 19,849,676,029.19
  5. Step 5: Solve for x
    x = 19,849,676,029.19/158,642.31
  6. Step 6: Final answer
    x = 125,122.21

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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.