Home / 121,158.10-181,619.02-57,961.72

Finding the Fourth Proportional to 121,158.10, 181,619.02 and 57,961.72

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Solution

The fourth proportional to 121,158.10, 181,619.02 and 57,961.72 is: 86,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,158.10 : 181,619.02 = 57,961.72 : x
  2. Step 2: Convert to fraction form
    121,158.10/181,619.02 = 57,961.72/x
  3. Step 3: Cross multiply
    121,158.10x = 181,619.02 × 57,961.72
  4. Step 4: Simplify right side
    121,158.10x = 10,526,950,402.32
  5. Step 5: Solve for x
    x = 10,526,950,402.32/121,158.10
  6. Step 6: Final answer
    x = 86,886.07

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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.