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Finding the Fourth Proportional to 212,014.92, 318,037.92 and 78,895.14

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Solution

The fourth proportional to 212,014.92, 318,037.92 and 78,895.14 is: 118,348.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,014.92 : 318,037.92 = 78,895.14 : x
  2. Step 2: Convert to fraction form
    212,014.92/318,037.92 = 78,895.14/x
  3. Step 3: Cross multiply
    212,014.92x = 318,037.92 × 78,895.14
  4. Step 4: Simplify right side
    212,014.92x = 25,091,646,223.71
  5. Step 5: Solve for x
    x = 25,091,646,223.71/212,014.92
  6. Step 6: Final answer
    x = 118,348.49

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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.