Home / 142,534.77-196,702.07-78,878.49

Finding the Fourth Proportional to 142,534.77, 196,702.07 and 78,878.49

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Solution

The fourth proportional to 142,534.77, 196,702.07 and 78,878.49 is: 108,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,534.77 : 196,702.07 = 78,878.49 : x
  2. Step 2: Convert to fraction form
    142,534.77/196,702.07 = 78,878.49/x
  3. Step 3: Cross multiply
    142,534.77x = 196,702.07 × 78,878.49
  4. Step 4: Simplify right side
    142,534.77x = 15,515,561,867.08
  5. Step 5: Solve for x
    x = 15,515,561,867.08/142,534.77
  6. Step 6: Final answer
    x = 108,854.58

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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.