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Finding the Fourth Proportional to 98,299.20, 147,434.40 and 28,171.20

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Solution

The fourth proportional to 98,299.20, 147,434.40 and 28,171.20 is: 42,252.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,299.20 : 147,434.40 = 28,171.20 : x
  2. Step 2: Convert to fraction form
    98,299.20/147,434.40 = 28,171.20/x
  3. Step 3: Cross multiply
    98,299.20x = 147,434.40 × 28,171.20
  4. Step 4: Simplify right side
    98,299.20x = 4,153,403,969.28
  5. Step 5: Solve for x
    x = 4,153,403,969.28/98,299.20
  6. Step 6: Final answer
    x = 42,252.67

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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.