Home / 124,876.83-172,386.21-79,615.50

Finding the Fourth Proportional to 124,876.83, 172,386.21 and 79,615.50

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Solution

The fourth proportional to 124,876.83, 172,386.21 and 79,615.50 is: 109,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,876.83 : 172,386.21 = 79,615.50 : x
  2. Step 2: Convert to fraction form
    124,876.83/172,386.21 = 79,615.50/x
  3. Step 3: Cross multiply
    124,876.83x = 172,386.21 × 79,615.50
  4. Step 4: Simplify right side
    124,876.83x = 13,724,614,302.26
  5. Step 5: Solve for x
    x = 13,724,614,302.26/124,876.83
  6. Step 6: Final answer
    x = 109,905.21

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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.