Home / 90,366.19-135,424.62-65,205.76

Finding the Fourth Proportional to 90,366.19, 135,424.62 and 65,205.76

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Solution

The fourth proportional to 90,366.19, 135,424.62 and 65,205.76 is: 97,718.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,366.19 : 135,424.62 = 65,205.76 : x
  2. Step 2: Convert to fraction form
    90,366.19/135,424.62 = 65,205.76/x
  3. Step 3: Cross multiply
    90,366.19x = 135,424.62 × 65,205.76
  4. Step 4: Simplify right side
    90,366.19x = 8,830,465,269.81
  5. Step 5: Solve for x
    x = 8,830,465,269.81/90,366.19
  6. Step 6: Final answer
    x = 97,718.69

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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.