Home / 121,218.18-181,579.34-98,808.72

Finding the Fourth Proportional to 121,218.18, 181,579.34 and 98,808.72

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Solution

The fourth proportional to 121,218.18, 181,579.34 and 98,808.72 is: 148,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,218.18 : 181,579.34 = 98,808.72 : x
  2. Step 2: Convert to fraction form
    121,218.18/181,579.34 = 98,808.72/x
  3. Step 3: Cross multiply
    121,218.18x = 181,579.34 × 98,808.72
  4. Step 4: Simplify right side
    121,218.18x = 17,941,622,163.84
  5. Step 5: Solve for x
    x = 17,941,622,163.84/121,218.18
  6. Step 6: Final answer
    x = 148,010.98

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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.