Home / 111,030.20-166,545.30-91,347.20

Finding the Fourth Proportional to 111,030.20, 166,545.30 and 91,347.20

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Solution

The fourth proportional to 111,030.20, 166,545.30 and 91,347.20 is: 137,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,030.20 : 166,545.30 = 91,347.20 : x
  2. Step 2: Convert to fraction form
    111,030.20/166,545.30 = 91,347.20/x
  3. Step 3: Cross multiply
    111,030.20x = 166,545.30 × 91,347.20
  4. Step 4: Simplify right side
    111,030.20x = 15,213,446,828.16
  5. Step 5: Solve for x
    x = 15,213,446,828.16/111,030.20
  6. Step 6: Final answer
    x = 137,020.80

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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.