Home / 131,784.34-181,862.75-71,354.50

Finding the Fourth Proportional to 131,784.34, 181,862.75 and 71,354.50

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Solution

The fourth proportional to 131,784.34, 181,862.75 and 71,354.50 is: 98,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,784.34 : 181,862.75 = 71,354.50 : x
  2. Step 2: Convert to fraction form
    131,784.34/181,862.75 = 71,354.50/x
  3. Step 3: Cross multiply
    131,784.34x = 181,862.75 × 71,354.50
  4. Step 4: Simplify right side
    131,784.34x = 12,976,725,594.88
  5. Step 5: Solve for x
    x = 12,976,725,594.88/131,784.34
  6. Step 6: Final answer
    x = 98,469.41

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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.