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Finding the Fourth Proportional to 191,107.40, 286,879.80 and 112,266.05

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Solution

The fourth proportional to 191,107.40, 286,879.80 and 112,266.05 is: 168,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,107.40 : 286,879.80 = 112,266.05 : x
  2. Step 2: Convert to fraction form
    191,107.40/286,879.80 = 112,266.05/x
  3. Step 3: Cross multiply
    191,107.40x = 286,879.80 × 112,266.05
  4. Step 4: Simplify right side
    191,107.40x = 32,206,861,970.79
  5. Step 5: Solve for x
    x = 32,206,861,970.79/191,107.40
  6. Step 6: Final answer
    x = 168,527.55

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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.