Home / 121,023.40-181,535.10-68,535.40

Finding the Fourth Proportional to 121,023.40, 181,535.10 and 68,535.40

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Solution

The fourth proportional to 121,023.40, 181,535.10 and 68,535.40 is: 102,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,023.40 : 181,535.10 = 68,535.40 : x
  2. Step 2: Convert to fraction form
    121,023.40/181,535.10 = 68,535.40/x
  3. Step 3: Cross multiply
    121,023.40x = 181,535.10 × 68,535.40
  4. Step 4: Simplify right side
    121,023.40x = 12,441,580,692.54
  5. Step 5: Solve for x
    x = 12,441,580,692.54/121,023.40
  6. Step 6: Final answer
    x = 102,803.10

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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.