Home / 111,510.20-167,265.30-78,267.80

Finding the Fourth Proportional to 111,510.20, 167,265.30 and 78,267.80

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Solution

The fourth proportional to 111,510.20, 167,265.30 and 78,267.80 is: 117,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,510.20 : 167,265.30 = 78,267.80 : x
  2. Step 2: Convert to fraction form
    111,510.20/167,265.30 = 78,267.80/x
  3. Step 3: Cross multiply
    111,510.20x = 167,265.30 × 78,267.80
  4. Step 4: Simplify right side
    111,510.20x = 13,091,487,047.34
  5. Step 5: Solve for x
    x = 13,091,487,047.34/111,510.20
  6. Step 6: Final answer
    x = 117,401.70

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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.