Home / 131,365.13-181,288.19-71,749.13

Finding the Fourth Proportional to 131,365.13, 181,288.19 and 71,749.13

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Solution

The fourth proportional to 131,365.13, 181,288.19 and 71,749.13 is: 99,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,365.13 : 181,288.19 = 71,749.13 : x
  2. Step 2: Convert to fraction form
    131,365.13/181,288.19 = 71,749.13/x
  3. Step 3: Cross multiply
    131,365.13x = 181,288.19 × 71,749.13
  4. Step 4: Simplify right side
    131,365.13x = 13,007,269,184.71
  5. Step 5: Solve for x
    x = 13,007,269,184.71/131,365.13
  6. Step 6: Final answer
    x = 99,016.15

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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.