Home / 108,943.12-163,316.16-75,678.80

Finding the Fourth Proportional to 108,943.12, 163,316.16 and 75,678.80

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Solution

The fourth proportional to 108,943.12, 163,316.16 and 75,678.80 is: 113,449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,943.12 : 163,316.16 = 75,678.80 : x
  2. Step 2: Convert to fraction form
    108,943.12/163,316.16 = 75,678.80/x
  3. Step 3: Cross multiply
    108,943.12x = 163,316.16 × 75,678.80
  4. Step 4: Simplify right side
    108,943.12x = 12,359,571,009.41
  5. Step 5: Solve for x
    x = 12,359,571,009.41/108,943.12
  6. Step 6: Final answer
    x = 113,449.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.