Home / 121,017.16-181,656.42-91,754.56

Finding the Fourth Proportional to 121,017.16, 181,656.42 and 91,754.56

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Solution

The fourth proportional to 121,017.16, 181,656.42 and 91,754.56 is: 137,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,017.16 : 181,656.42 = 91,754.56 : x
  2. Step 2: Convert to fraction form
    121,017.16/181,656.42 = 91,754.56/x
  3. Step 3: Cross multiply
    121,017.16x = 181,656.42 × 91,754.56
  4. Step 4: Simplify right side
    121,017.16x = 16,667,804,888.28
  5. Step 5: Solve for x
    x = 16,667,804,888.28/121,017.16
  6. Step 6: Final answer
    x = 137,730.92

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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.