Home / 123,881.13-170,953.09-72,194.93

Finding the Fourth Proportional to 123,881.13, 170,953.09 and 72,194.93

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Solution

The fourth proportional to 123,881.13, 170,953.09 and 72,194.93 is: 99,627.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,881.13 : 170,953.09 = 72,194.93 : x
  2. Step 2: Convert to fraction form
    123,881.13/170,953.09 = 72,194.93/x
  3. Step 3: Cross multiply
    123,881.13x = 170,953.09 × 72,194.93
  4. Step 4: Simplify right side
    123,881.13x = 12,341,946,365.83
  5. Step 5: Solve for x
    x = 12,341,946,365.83/123,881.13
  6. Step 6: Final answer
    x = 99,627.33

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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.