Home / 130,359.65-179,911.40-79,402.28

Finding the Fourth Proportional to 130,359.65, 179,911.40 and 79,402.28

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Solution

The fourth proportional to 130,359.65, 179,911.40 and 79,402.28 is: 109,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,359.65 : 179,911.40 = 79,402.28 : x
  2. Step 2: Convert to fraction form
    130,359.65/179,911.40 = 79,402.28/x
  3. Step 3: Cross multiply
    130,359.65x = 179,911.40 × 79,402.28
  4. Step 4: Simplify right side
    130,359.65x = 14,285,374,061.42
  5. Step 5: Solve for x
    x = 14,285,374,061.42/130,359.65
  6. Step 6: Final answer
    x = 109,584.33

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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.