Home / 130,885.27-196,623.15-78,331.66

Finding the Fourth Proportional to 130,885.27, 196,623.15 and 78,331.66

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Solution

The fourth proportional to 130,885.27, 196,623.15 and 78,331.66 is: 117,674.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,885.27 : 196,623.15 = 78,331.66 : x
  2. Step 2: Convert to fraction form
    130,885.27/196,623.15 = 78,331.66/x
  3. Step 3: Cross multiply
    130,885.27x = 196,623.15 × 78,331.66
  4. Step 4: Simplify right side
    130,885.27x = 15,401,816,948.63
  5. Step 5: Solve for x
    x = 15,401,816,948.63/130,885.27
  6. Step 6: Final answer
    x = 117,674.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.