Home / 113,407.07-156,436.56-70,891.79

Finding the Fourth Proportional to 113,407.07, 156,436.56 and 70,891.79

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Solution

The fourth proportional to 113,407.07, 156,436.56 and 70,891.79 is: 97,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,407.07 : 156,436.56 = 70,891.79 : x
  2. Step 2: Convert to fraction form
    113,407.07/156,436.56 = 70,891.79/x
  3. Step 3: Cross multiply
    113,407.07x = 156,436.56 × 70,891.79
  4. Step 4: Simplify right side
    113,407.07x = 11,090,066,977.66
  5. Step 5: Solve for x
    x = 11,090,066,977.66/113,407.07
  6. Step 6: Final answer
    x = 97,789.91

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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.