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Finding the Fourth Proportional to 98,217.80, 147,326.70 and 28,097.12

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Solution

The fourth proportional to 98,217.80, 147,326.70 and 28,097.12 is: 42,145.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,217.80 : 147,326.70 = 28,097.12 : x
  2. Step 2: Convert to fraction form
    98,217.80/147,326.70 = 28,097.12/x
  3. Step 3: Cross multiply
    98,217.80x = 147,326.70 × 28,097.12
  4. Step 4: Simplify right side
    98,217.80x = 4,139,455,969.10
  5. Step 5: Solve for x
    x = 4,139,455,969.10/98,217.80
  6. Step 6: Final answer
    x = 42,145.68

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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.