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Finding the Fourth Proportional to 108,886.68, 150,263.10 and 61,144.20

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Solution

The fourth proportional to 108,886.68, 150,263.10 and 61,144.20 is: 84,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,886.68 : 150,263.10 = 61,144.20 : x
  2. Step 2: Convert to fraction form
    108,886.68/150,263.10 = 61,144.20/x
  3. Step 3: Cross multiply
    108,886.68x = 150,263.10 × 61,144.20
  4. Step 4: Simplify right side
    108,886.68x = 9,187,717,039.02
  5. Step 5: Solve for x
    x = 9,187,717,039.02/108,886.68
  6. Step 6: Final answer
    x = 84,378.70

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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.