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Finding the Fourth Proportional to 191,064.61, 286,560.46 and 72,747.91

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Solution

The fourth proportional to 191,064.61, 286,560.46 and 72,747.91 is: 109,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,064.61 : 286,560.46 = 72,747.91 : x
  2. Step 2: Convert to fraction form
    191,064.61/286,560.46 = 72,747.91/x
  3. Step 3: Cross multiply
    191,064.61x = 286,560.46 × 72,747.91
  4. Step 4: Simplify right side
    191,064.61x = 20,846,674,553.64
  5. Step 5: Solve for x
    x = 20,846,674,553.64/191,064.61
  6. Step 6: Final answer
    x = 109,107.98

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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.