Home / 128,766.12-193,176.88-43,385.47

Finding the Fourth Proportional to 128,766.12, 193,176.88 and 43,385.47

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Solution

The fourth proportional to 128,766.12, 193,176.88 and 43,385.47 is: 65,087.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,766.12 : 193,176.88 = 43,385.47 : x
  2. Step 2: Convert to fraction form
    128,766.12/193,176.88 = 43,385.47/x
  3. Step 3: Cross multiply
    128,766.12x = 193,176.88 × 43,385.47
  4. Step 4: Simplify right side
    128,766.12x = 8,381,068,985.63
  5. Step 5: Solve for x
    x = 8,381,068,985.63/128,766.12
  6. Step 6: Final answer
    x = 65,087.53

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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.