Home / 143,116.81-197,497.36-85,788.52

Finding the Fourth Proportional to 143,116.81, 197,497.36 and 85,788.52

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Solution

The fourth proportional to 143,116.81, 197,497.36 and 85,788.52 is: 118,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,116.81 : 197,497.36 = 85,788.52 : x
  2. Step 2: Convert to fraction form
    143,116.81/197,497.36 = 85,788.52/x
  3. Step 3: Cross multiply
    143,116.81x = 197,497.36 × 85,788.52
  4. Step 4: Simplify right side
    143,116.81x = 16,943,006,218.31
  5. Step 5: Solve for x
    x = 16,943,006,218.31/143,116.81
  6. Step 6: Final answer
    x = 118,385.86

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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.