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Finding the Fourth Proportional to 109,381.50, 150,946.58 and 59,080.50

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Solution

The fourth proportional to 109,381.50, 150,946.58 and 59,080.50 is: 81,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,381.50 : 150,946.58 = 59,080.50 : x
  2. Step 2: Convert to fraction form
    109,381.50/150,946.58 = 59,080.50/x
  3. Step 3: Cross multiply
    109,381.50x = 150,946.58 × 59,080.50
  4. Step 4: Simplify right side
    109,381.50x = 8,917,999,124.29
  5. Step 5: Solve for x
    x = 8,917,999,124.29/109,381.50
  6. Step 6: Final answer
    x = 81,531.15

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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.