Home / 140,789.41-211,307.13-81,543.58

Finding the Fourth Proportional to 140,789.41, 211,307.13 and 81,543.58

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Solution

The fourth proportional to 140,789.41, 211,307.13 and 81,543.58 is: 122,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,789.41 : 211,307.13 = 81,543.58 : x
  2. Step 2: Convert to fraction form
    140,789.41/211,307.13 = 81,543.58/x
  3. Step 3: Cross multiply
    140,789.41x = 211,307.13 × 81,543.58
  4. Step 4: Simplify right side
    140,789.41x = 17,230,739,331.46
  5. Step 5: Solve for x
    x = 17,230,739,331.46/140,789.41
  6. Step 6: Final answer
    x = 122,386.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.