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Finding the Fourth Proportional to 108,679.80, 152,255.40 and 108,679.80

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Solution

The fourth proportional to 108,679.80, 152,255.40 and 108,679.80 is: 152,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,679.80 : 152,255.40 = 108,679.80 : x
  2. Step 2: Convert to fraction form
    108,679.80/152,255.40 = 108,679.80/x
  3. Step 3: Cross multiply
    108,679.80x = 152,255.40 × 108,679.80
  4. Step 4: Simplify right side
    108,679.80x = 16,547,086,420.92
  5. Step 5: Solve for x
    x = 16,547,086,420.92/108,679.80
  6. Step 6: Final answer
    x = 152,255.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.