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Finding the Fourth Proportional to 191,247.20, 286,870.80 and 106,920.80

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Solution

The fourth proportional to 191,247.20, 286,870.80 and 106,920.80 is: 160,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,247.20 : 286,870.80 = 106,920.80 : x
  2. Step 2: Convert to fraction form
    191,247.20/286,870.80 = 106,920.80/x
  3. Step 3: Cross multiply
    191,247.20x = 286,870.80 × 106,920.80
  4. Step 4: Simplify right side
    191,247.20x = 30,672,455,432.64
  5. Step 5: Solve for x
    x = 30,672,455,432.64/191,247.20
  6. Step 6: Final answer
    x = 160,381.20

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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.