Home / 109,721.92-151,416-59,420.80

Finding the Fourth Proportional to 109,721.92, 151,416 and 59,420.80

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Solution

The fourth proportional to 109,721.92, 151,416 and 59,420.80 is: 82,000.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,721.92 : 151,416 = 59,420.80 : x
  2. Step 2: Convert to fraction form
    109,721.92/151,416 = 59,420.80/x
  3. Step 3: Cross multiply
    109,721.92x = 151,416 × 59,420.80
  4. Step 4: Simplify right side
    109,721.92x = 8,997,259,852.80
  5. Step 5: Solve for x
    x = 8,997,259,852.80/109,721.92
  6. Step 6: Final answer
    x = 82,000.57

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1.5x scale

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.