Home / 124,840.31-172,231.20-79,510.16

Finding the Fourth Proportional to 124,840.31, 172,231.20 and 79,510.16

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Solution

The fourth proportional to 124,840.31, 172,231.20 and 79,510.16 is: 109,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,840.31 : 172,231.20 = 79,510.16 : x
  2. Step 2: Convert to fraction form
    124,840.31/172,231.20 = 79,510.16/x
  3. Step 3: Cross multiply
    124,840.31x = 172,231.20 × 79,510.16
  4. Step 4: Simplify right side
    124,840.31x = 13,694,129,407.84
  5. Step 5: Solve for x
    x = 13,694,129,407.84/124,840.31
  6. Step 6: Final answer
    x = 109,693.17

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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.