Home / 130,119.86-179,566.80-76,405.52

Finding the Fourth Proportional to 130,119.86, 179,566.80 and 76,405.52

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Solution

The fourth proportional to 130,119.86, 179,566.80 and 76,405.52 is: 105,440.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,119.86 : 179,566.80 = 76,405.52 : x
  2. Step 2: Convert to fraction form
    130,119.86/179,566.80 = 76,405.52/x
  3. Step 3: Cross multiply
    130,119.86x = 179,566.80 × 76,405.52
  4. Step 4: Simplify right side
    130,119.86x = 13,719,894,728.74
  5. Step 5: Solve for x
    x = 13,719,894,728.74/130,119.86
  6. Step 6: Final answer
    x = 105,440.44

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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.