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Finding the Fourth Proportional to 173,988.12, 260,982.20 and 42,660.12

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Solution

The fourth proportional to 173,988.12, 260,982.20 and 42,660.12 is: 63,990.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,988.12 : 260,982.20 = 42,660.12 : x
  2. Step 2: Convert to fraction form
    173,988.12/260,982.20 = 42,660.12/x
  3. Step 3: Cross multiply
    173,988.12x = 260,982.20 × 42,660.12
  4. Step 4: Simplify right side
    173,988.12x = 11,133,531,969.86
  5. Step 5: Solve for x
    x = 11,133,531,969.86/173,988.12
  6. Step 6: Final answer
    x = 63,990.18

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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.