Home / 161,969.12-223,521.80-90,363.12

Finding the Fourth Proportional to 161,969.12, 223,521.80 and 90,363.12

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Solution

The fourth proportional to 161,969.12, 223,521.80 and 90,363.12 is: 124,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,969.12 : 223,521.80 = 90,363.12 : x
  2. Step 2: Convert to fraction form
    161,969.12/223,521.80 = 90,363.12/x
  3. Step 3: Cross multiply
    161,969.12x = 223,521.80 × 90,363.12
  4. Step 4: Simplify right side
    161,969.12x = 20,198,127,236.02
  5. Step 5: Solve for x
    x = 20,198,127,236.02/161,969.12
  6. Step 6: Final answer
    x = 124,703.57

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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.