Home / 109,712.07-151,403.20-61,314.79

Finding the Fourth Proportional to 109,712.07, 151,403.20 and 61,314.79

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Solution

The fourth proportional to 109,712.07, 151,403.20 and 61,314.79 is: 84,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,712.07 : 151,403.20 = 61,314.79 : x
  2. Step 2: Convert to fraction form
    109,712.07/151,403.20 = 61,314.79/x
  3. Step 3: Cross multiply
    109,712.07x = 151,403.20 × 61,314.79
  4. Step 4: Simplify right side
    109,712.07x = 9,283,254,699.13
  5. Step 5: Solve for x
    x = 9,283,254,699.13/109,712.07
  6. Step 6: Final answer
    x = 84,614.71

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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.