Home / 212,009.40-318,014.10-93,619.80

Finding the Fourth Proportional to 212,009.40, 318,014.10 and 93,619.80

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Solution

The fourth proportional to 212,009.40, 318,014.10 and 93,619.80 is: 140,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,009.40 : 318,014.10 = 93,619.80 : x
  2. Step 2: Convert to fraction form
    212,009.40/318,014.10 = 93,619.80/x
  3. Step 3: Cross multiply
    212,009.40x = 318,014.10 × 93,619.80
  4. Step 4: Simplify right side
    212,009.40x = 29,772,416,439.18
  5. Step 5: Solve for x
    x = 29,772,416,439.18/212,009.40
  6. Step 6: Final answer
    x = 140,429.70

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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.