Home / 99,729.32-149,592.80-28,653.68

Finding the Fourth Proportional to 99,729.32, 149,592.80 and 28,653.68

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Solution

The fourth proportional to 99,729.32, 149,592.80 and 28,653.68 is: 42,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,729.32 : 149,592.80 = 28,653.68 : x
  2. Step 2: Convert to fraction form
    99,729.32/149,592.80 = 28,653.68/x
  3. Step 3: Cross multiply
    99,729.32x = 149,592.80 × 28,653.68
  4. Step 4: Simplify right side
    99,729.32x = 4,286,384,221.50
  5. Step 5: Solve for x
    x = 4,286,384,221.50/99,729.32
  6. Step 6: Final answer
    x = 42,980.18

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1.5x scale

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.