Home / 142,385.36-196,530.78-88,638.44

Finding the Fourth Proportional to 142,385.36, 196,530.78 and 88,638.44

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Solution

The fourth proportional to 142,385.36, 196,530.78 and 88,638.44 is: 122,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,385.36 : 196,530.78 = 88,638.44 : x
  2. Step 2: Convert to fraction form
    142,385.36/196,530.78 = 88,638.44/x
  3. Step 3: Cross multiply
    142,385.36x = 196,530.78 × 88,638.44
  4. Step 4: Simplify right side
    142,385.36x = 17,420,181,751.18
  5. Step 5: Solve for x
    x = 17,420,181,751.18/142,385.36
  6. Step 6: Final answer
    x = 122,345.32

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1.5x scale

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.