Home / 136,337.55-188,097.10-78,945.54

Finding the Fourth Proportional to 136,337.55, 188,097.10 and 78,945.54

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Solution

The fourth proportional to 136,337.55, 188,097.10 and 78,945.54 is: 108,916.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,337.55 : 188,097.10 = 78,945.54 : x
  2. Step 2: Convert to fraction form
    136,337.55/188,097.10 = 78,945.54/x
  3. Step 3: Cross multiply
    136,337.55x = 188,097.10 × 78,945.54
  4. Step 4: Simplify right side
    136,337.55x = 14,849,427,131.93
  5. Step 5: Solve for x
    x = 14,849,427,131.93/136,337.55
  6. Step 6: Final answer
    x = 108,916.63

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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.