Home / 108,688.25-149,959.11-70,449.40

Finding the Fourth Proportional to 108,688.25, 149,959.11 and 70,449.40

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Solution

The fourth proportional to 108,688.25, 149,959.11 and 70,449.40 is: 97,200.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,688.25 : 149,959.11 = 70,449.40 : x
  2. Step 2: Convert to fraction form
    108,688.25/149,959.11 = 70,449.40/x
  3. Step 3: Cross multiply
    108,688.25x = 149,959.11 × 70,449.40
  4. Step 4: Simplify right side
    108,688.25x = 10,564,528,932.15
  5. Step 5: Solve for x
    x = 10,564,528,932.15/108,688.25
  6. Step 6: Final answer
    x = 97,200.29

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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.