Home / 121,981.02-182,971.53-51,811.26

Finding the Fourth Proportional to 121,981.02, 182,971.53 and 51,811.26

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Solution

The fourth proportional to 121,981.02, 182,971.53 and 51,811.26 is: 77,716.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,981.02 : 182,971.53 = 51,811.26 : x
  2. Step 2: Convert to fraction form
    121,981.02/182,971.53 = 51,811.26/x
  3. Step 3: Cross multiply
    121,981.02x = 182,971.53 × 51,811.26
  4. Step 4: Simplify right side
    121,981.02x = 9,479,985,513.43
  5. Step 5: Solve for x
    x = 9,479,985,513.43/121,981.02
  6. Step 6: Final answer
    x = 77,716.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.