Home / 130,111.24-179,554.75-76,397.15

Finding the Fourth Proportional to 130,111.24, 179,554.75 and 76,397.15

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Solution

The fourth proportional to 130,111.24, 179,554.75 and 76,397.15 is: 105,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,111.24 : 179,554.75 = 76,397.15 : x
  2. Step 2: Convert to fraction form
    130,111.24/179,554.75 = 76,397.15/x
  3. Step 3: Cross multiply
    130,111.24x = 179,554.75 × 76,397.15
  4. Step 4: Simplify right side
    130,111.24x = 13,717,471,136.73
  5. Step 5: Solve for x
    x = 13,717,471,136.73/130,111.24
  6. Step 6: Final answer
    x = 105,428.80

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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.