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Finding the Fourth Proportional to 121,246.60, 181,826.70 and 42,363.40

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Solution

The fourth proportional to 121,246.60, 181,826.70 and 42,363.40 is: 63,530.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,246.60 : 181,826.70 = 42,363.40 : x
  2. Step 2: Convert to fraction form
    121,246.60/181,826.70 = 42,363.40/x
  3. Step 3: Cross multiply
    121,246.60x = 181,826.70 × 42,363.40
  4. Step 4: Simplify right side
    121,246.60x = 7,702,797,222.78
  5. Step 5: Solve for x
    x = 7,702,797,222.78/121,246.60
  6. Step 6: Final answer
    x = 63,530.01

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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.