Home / 99,322.20-136,930.47-67,435.74

Finding the Fourth Proportional to 99,322.20, 136,930.47 and 67,435.74

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Solution

The fourth proportional to 99,322.20, 136,930.47 and 67,435.74 is: 92,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,322.20 : 136,930.47 = 67,435.74 : x
  2. Step 2: Convert to fraction form
    99,322.20/136,930.47 = 67,435.74/x
  3. Step 3: Cross multiply
    99,322.20x = 136,930.47 × 67,435.74
  4. Step 4: Simplify right side
    99,322.20x = 9,234,007,573.00
  5. Step 5: Solve for x
    x = 9,234,007,573.00/99,322.20
  6. Step 6: Final answer
    x = 92,970.23

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1.5x scale

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.