Home / 140,172.12-193,432.08-76,509.88

Finding the Fourth Proportional to 140,172.12, 193,432.08 and 76,509.88

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Solution

The fourth proportional to 140,172.12, 193,432.08 and 76,509.88 is: 105,580.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,172.12 : 193,432.08 = 76,509.88 : x
  2. Step 2: Convert to fraction form
    140,172.12/193,432.08 = 76,509.88/x
  3. Step 3: Cross multiply
    140,172.12x = 193,432.08 × 76,509.88
  4. Step 4: Simplify right side
    140,172.12x = 14,799,465,228.95
  5. Step 5: Solve for x
    x = 14,799,465,228.95/140,172.12
  6. Step 6: Final answer
    x = 105,580.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.