Home / 121,235.60-181,723.80-54,664.40

Finding the Fourth Proportional to 121,235.60, 181,723.80 and 54,664.40

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Solution

The fourth proportional to 121,235.60, 181,723.80 and 54,664.40 is: 81,938.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,235.60 : 181,723.80 = 54,664.40 : x
  2. Step 2: Convert to fraction form
    121,235.60/181,723.80 = 54,664.40/x
  3. Step 3: Cross multiply
    121,235.60x = 181,723.80 × 54,664.40
  4. Step 4: Simplify right side
    121,235.60x = 9,933,822,492.72
  5. Step 5: Solve for x
    x = 9,933,822,492.72/121,235.60
  6. Step 6: Final answer
    x = 81,938.16

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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.