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Finding the Fourth Proportional to 159,323.85, 219,866.85 and 87,703.50

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Solution

The fourth proportional to 159,323.85, 219,866.85 and 87,703.50 is: 121,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,323.85 : 219,866.85 = 87,703.50 : x
  2. Step 2: Convert to fraction form
    159,323.85/219,866.85 = 87,703.50/x
  3. Step 3: Cross multiply
    159,323.85x = 219,866.85 × 87,703.50
  4. Step 4: Simplify right side
    159,323.85x = 19,283,092,278.98
  5. Step 5: Solve for x
    x = 19,283,092,278.98/159,323.85
  6. Step 6: Final answer
    x = 121,030.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.