Home / 130,406.16-179,957.52-76,679.40

Finding the Fourth Proportional to 130,406.16, 179,957.52 and 76,679.40

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Solution

The fourth proportional to 130,406.16, 179,957.52 and 76,679.40 is: 105,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,406.16 : 179,957.52 = 76,679.40 : x
  2. Step 2: Convert to fraction form
    130,406.16/179,957.52 = 76,679.40/x
  3. Step 3: Cross multiply
    130,406.16x = 179,957.52 × 76,679.40
  4. Step 4: Simplify right side
    130,406.16x = 13,799,034,659.09
  5. Step 5: Solve for x
    x = 13,799,034,659.09/130,406.16
  6. Step 6: Final answer
    x = 105,815.82

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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.