Home / 143,117.81-197,498.74-85,789.52

Finding the Fourth Proportional to 143,117.81, 197,498.74 and 85,789.52

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Solution

The fourth proportional to 143,117.81, 197,498.74 and 85,789.52 is: 118,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,117.81 : 197,498.74 = 85,789.52 : x
  2. Step 2: Convert to fraction form
    143,117.81/197,498.74 = 85,789.52/x
  3. Step 3: Cross multiply
    143,117.81x = 197,498.74 × 85,789.52
  4. Step 4: Simplify right side
    143,117.81x = 16,943,322,105.20
  5. Step 5: Solve for x
    x = 16,943,322,105.20/143,117.81
  6. Step 6: Final answer
    x = 118,387.24

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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.