Home / 143,458.83-198,115.20-118,215.36

Finding the Fourth Proportional to 143,458.83, 198,115.20 and 118,215.36

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Solution

The fourth proportional to 143,458.83, 198,115.20 and 118,215.36 is: 163,254.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,458.83 : 198,115.20 = 118,215.36 : x
  2. Step 2: Convert to fraction form
    143,458.83/198,115.20 = 118,215.36/x
  3. Step 3: Cross multiply
    143,458.83x = 198,115.20 × 118,215.36
  4. Step 4: Simplify right side
    143,458.83x = 23,420,259,689.47
  5. Step 5: Solve for x
    x = 23,420,259,689.47/143,458.83
  6. Step 6: Final answer
    x = 163,254.22

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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.