Home / 109,648.13-151,342.76-71,502.80

Finding the Fourth Proportional to 109,648.13, 151,342.76 and 71,502.80

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Solution

The fourth proportional to 109,648.13, 151,342.76 and 71,502.80 is: 98,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,648.13 : 151,342.76 = 71,502.80 : x
  2. Step 2: Convert to fraction form
    109,648.13/151,342.76 = 71,502.80/x
  3. Step 3: Cross multiply
    109,648.13x = 151,342.76 × 71,502.80
  4. Step 4: Simplify right side
    109,648.13x = 10,821,430,521.77
  5. Step 5: Solve for x
    x = 10,821,430,521.77/109,648.13
  6. Step 6: Final answer
    x = 98,692.34

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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.