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Finding the Fourth Proportional to 191,859.30, 287,624.84 and 73,615.50

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Solution

The fourth proportional to 191,859.30, 287,624.84 and 73,615.50 is: 110,360.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,859.30 : 287,624.84 = 73,615.50 : x
  2. Step 2: Convert to fraction form
    191,859.30/287,624.84 = 73,615.50/x
  3. Step 3: Cross multiply
    191,859.30x = 287,624.84 × 73,615.50
  4. Step 4: Simplify right side
    191,859.30x = 21,173,646,040.94
  5. Step 5: Solve for x
    x = 21,173,646,040.94/191,859.30
  6. Step 6: Final answer
    x = 110,360.28

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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.