Home / 140,485.38-193,869.90-76,829.10

Finding the Fourth Proportional to 140,485.38, 193,869.90 and 76,829.10

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Solution

The fourth proportional to 140,485.38, 193,869.90 and 76,829.10 is: 106,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,485.38 : 193,869.90 = 76,829.10 : x
  2. Step 2: Convert to fraction form
    140,485.38/193,869.90 = 76,829.10/x
  3. Step 3: Cross multiply
    140,485.38x = 193,869.90 × 76,829.10
  4. Step 4: Simplify right side
    140,485.38x = 14,894,849,934.09
  5. Step 5: Solve for x
    x = 14,894,849,934.09/140,485.38
  6. Step 6: Final answer
    x = 106,024.20

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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.