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Finding the Fourth Proportional to 191,061.97, 286,595.70 and 72,739.80

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Solution

The fourth proportional to 191,061.97, 286,595.70 and 72,739.80 is: 109,110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,061.97 : 286,595.70 = 72,739.80 : x
  2. Step 2: Convert to fraction form
    191,061.97/286,595.70 = 72,739.80/x
  3. Step 3: Cross multiply
    191,061.97x = 286,595.70 × 72,739.80
  4. Step 4: Simplify right side
    191,061.97x = 20,846,913,898.86
  5. Step 5: Solve for x
    x = 20,846,913,898.86/191,061.97
  6. Step 6: Final answer
    x = 109,110.75

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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.