Home / 212,100.32-318,101.28-93,707.12

Finding the Fourth Proportional to 212,100.32, 318,101.28 and 93,707.12

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Solution

The fourth proportional to 212,100.32, 318,101.28 and 93,707.12 is: 140,538.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,100.32 : 318,101.28 = 93,707.12 : x
  2. Step 2: Convert to fraction form
    212,100.32/318,101.28 = 93,707.12/x
  3. Step 3: Cross multiply
    212,100.32x = 318,101.28 × 93,707.12
  4. Step 4: Simplify right side
    212,100.32x = 29,808,354,817.11
  5. Step 5: Solve for x
    x = 29,808,354,817.11/212,100.32
  6. Step 6: Final answer
    x = 140,538.94

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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.