Home / 123,839.86-170,929.64-70,156.53

Finding the Fourth Proportional to 123,839.86, 170,929.64 and 70,156.53

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Solution

The fourth proportional to 123,839.86, 170,929.64 and 70,156.53 is: 96,833.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,839.86 : 170,929.64 = 70,156.53 : x
  2. Step 2: Convert to fraction form
    123,839.86/170,929.64 = 70,156.53/x
  3. Step 3: Cross multiply
    123,839.86x = 170,929.64 × 70,156.53
  4. Step 4: Simplify right side
    123,839.86x = 11,991,830,416.55
  5. Step 5: Solve for x
    x = 11,991,830,416.55/123,839.86
  6. Step 6: Final answer
    x = 96,833.37

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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.