Home / 129,907,555.38-179,272,364.37-77,696,590.02

Finding the Fourth Proportional to 129,907,555.38, 179,272,364.37 and 77,696,590.02

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Solution

The fourth proportional to 129,907,555.38, 179,272,364.37 and 77,696,590.02 is: 107,221,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907,555.38 : 179,272,364.37 = 77,696,590.02 : x
  2. Step 2: Convert to fraction form
    129,907,555.38/179,272,364.37 = 77,696,590.02/x
  3. Step 3: Cross multiply
    129,907,555.38x = 179,272,364.37 × 77,696,590.02
  4. Step 4: Simplify right side
    129,907,555.38x = 13,928,851,396,371,946
  5. Step 5: Solve for x
    x = 13,928,851,396,371,946/129,907,555.38
  6. Step 6: Final answer
    x = 107,221,257.11

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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.