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Finding the Fourth Proportional to 212,562.02, 318,837.72 and 86,168.46

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Solution

The fourth proportional to 212,562.02, 318,837.72 and 86,168.46 is: 129,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,562.02 : 318,837.72 = 86,168.46 : x
  2. Step 2: Convert to fraction form
    212,562.02/318,837.72 = 86,168.46/x
  3. Step 3: Cross multiply
    212,562.02x = 318,837.72 × 86,168.46
  4. Step 4: Simplify right side
    212,562.02x = 27,473,754,562.92
  5. Step 5: Solve for x
    x = 27,473,754,562.92/212,562.02
  6. Step 6: Final answer
    x = 129,250.53

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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.