Home / 136,278.40-204,417.60-89,039.20

Finding the Fourth Proportional to 136,278.40, 204,417.60 and 89,039.20

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Solution

The fourth proportional to 136,278.40, 204,417.60 and 89,039.20 is: 133,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,278.40 : 204,417.60 = 89,039.20 : x
  2. Step 2: Convert to fraction form
    136,278.40/204,417.60 = 89,039.20/x
  3. Step 3: Cross multiply
    136,278.40x = 204,417.60 × 89,039.20
  4. Step 4: Simplify right side
    136,278.40x = 18,201,179,569.92
  5. Step 5: Solve for x
    x = 18,201,179,569.92/136,278.40
  6. Step 6: Final answer
    x = 133,558.80

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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.