Home / 130,118.61-179,565.09-76,404.27

Finding the Fourth Proportional to 130,118.61, 179,565.09 and 76,404.27

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Solution

The fourth proportional to 130,118.61, 179,565.09 and 76,404.27 is: 105,438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,118.61 : 179,565.09 = 76,404.27 : x
  2. Step 2: Convert to fraction form
    130,118.61/179,565.09 = 76,404.27/x
  3. Step 3: Cross multiply
    130,118.61x = 179,565.09 × 76,404.27
  4. Step 4: Simplify right side
    130,118.61x = 13,719,539,618.93
  5. Step 5: Solve for x
    x = 13,719,539,618.93/130,118.61
  6. Step 6: Final answer
    x = 105,438.72

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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.