Home / 143,940,347.78-215,567,296.11-91,961,432.74

Finding the Fourth Proportional to 143,940,347.78, 215,567,296.11 and 91,961,432.74

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Solution

The fourth proportional to 143,940,347.78, 215,567,296.11 and 91,961,432.74 is: 137,722,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,940,347.78 : 215,567,296.11 = 91,961,432.74 : x
  2. Step 2: Convert to fraction form
    143,940,347.78/215,567,296.11 = 91,961,432.74/x
  3. Step 3: Cross multiply
    143,940,347.78x = 215,567,296.11 × 91,961,432.74
  4. Step 4: Simplify right side
    143,940,347.78x = 19,823,877,402,163,428
  5. Step 5: Solve for x
    x = 19,823,877,402,163,428/143,940,347.78
  6. Step 6: Final answer
    x = 137,722,867.20

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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.