Home / 117,221,815.91-161,795,502.59-79,608,622.16

Finding the Fourth Proportional to 117,221,815.91, 161,795,502.59 and 79,608,622.16

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Solution

The fourth proportional to 117,221,815.91, 161,795,502.59 and 79,608,622.16 is: 109,879,862.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221,815.91 : 161,795,502.59 = 79,608,622.16 : x
  2. Step 2: Convert to fraction form
    117,221,815.91/161,795,502.59 = 79,608,622.16/x
  3. Step 3: Cross multiply
    117,221,815.91x = 161,795,502.59 × 79,608,622.16
  4. Step 4: Simplify right side
    117,221,815.91x = 12,880,317,031,667,592
  5. Step 5: Solve for x
    x = 12,880,317,031,667,592/117,221,815.91
  6. Step 6: Final answer
    x = 109,879,862.65

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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.