Home / 130,381.91-179,920.81-80,071.19

Finding the Fourth Proportional to 130,381.91, 179,920.81 and 80,071.19

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Solution

The fourth proportional to 130,381.91, 179,920.81 and 80,071.19 is: 110,494.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,381.91 : 179,920.81 = 80,071.19 : x
  2. Step 2: Convert to fraction form
    130,381.91/179,920.81 = 80,071.19/x
  3. Step 3: Cross multiply
    130,381.91x = 179,920.81 × 80,071.19
  4. Step 4: Simplify right side
    130,381.91x = 14,406,473,362.46
  5. Step 5: Solve for x
    x = 14,406,473,362.46/130,381.91
  6. Step 6: Final answer
    x = 110,494.42

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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.