Home / 108,478.12-149,572.26-86,950.60

Finding the Fourth Proportional to 108,478.12, 149,572.26 and 86,950.60

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Solution

The fourth proportional to 108,478.12, 149,572.26 and 86,950.60 is: 119,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,478.12 : 149,572.26 = 86,950.60 : x
  2. Step 2: Convert to fraction form
    108,478.12/149,572.26 = 86,950.60/x
  3. Step 3: Cross multiply
    108,478.12x = 149,572.26 × 86,950.60
  4. Step 4: Simplify right side
    108,478.12x = 13,005,397,750.36
  5. Step 5: Solve for x
    x = 13,005,397,750.36/108,478.12
  6. Step 6: Final answer
    x = 119,889.59

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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.