Home / 90,789.93-136,206.16-89,283.74

Finding the Fourth Proportional to 90,789.93, 136,206.16 and 89,283.74

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Solution

The fourth proportional to 90,789.93, 136,206.16 and 89,283.74 is: 133,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,789.93 : 136,206.16 = 89,283.74 : x
  2. Step 2: Convert to fraction form
    90,789.93/136,206.16 = 89,283.74/x
  3. Step 3: Cross multiply
    90,789.93x = 136,206.16 × 89,283.74
  4. Step 4: Simplify right side
    90,789.93x = 12,160,994,471.60
  5. Step 5: Solve for x
    x = 12,160,994,471.60/90,789.93
  6. Step 6: Final answer
    x = 133,946.51

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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.