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Finding the Fourth Proportional to 109,521.48, 151,139.70 and 59,220.48

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Solution

The fourth proportional to 109,521.48, 151,139.70 and 59,220.48 is: 81,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,521.48 : 151,139.70 = 59,220.48 : x
  2. Step 2: Convert to fraction form
    109,521.48/151,139.70 = 59,220.48/x
  3. Step 3: Cross multiply
    109,521.48x = 151,139.70 × 59,220.48
  4. Step 4: Simplify right side
    109,521.48x = 8,950,565,581.06
  5. Step 5: Solve for x
    x = 8,950,565,581.06/109,521.48
  6. Step 6: Final answer
    x = 81,724.29

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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.