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Finding the Fourth Proportional to 108,749.20, 163,075.20 and 42,167.20

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Solution

The fourth proportional to 108,749.20, 163,075.20 and 42,167.20 is: 63,231.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,749.20 : 163,075.20 = 42,167.20 : x
  2. Step 2: Convert to fraction form
    108,749.20/163,075.20 = 42,167.20/x
  3. Step 3: Cross multiply
    108,749.20x = 163,075.20 × 42,167.20
  4. Step 4: Simplify right side
    108,749.20x = 6,876,424,573.44
  5. Step 5: Solve for x
    x = 6,876,424,573.44/108,749.20
  6. Step 6: Final answer
    x = 63,231.96

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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.