Home / 129,907,559-179,272,369.14-77,696,593.58

Finding the Fourth Proportional to 129,907,559, 179,272,369.14 and 77,696,593.58

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Solution

The fourth proportional to 129,907,559, 179,272,369.14 and 77,696,593.58 is: 107,221,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907,559 : 179,272,369.14 = 77,696,593.58 : x
  2. Step 2: Convert to fraction form
    129,907,559/179,272,369.14 = 77,696,593.58/x
  3. Step 3: Cross multiply
    129,907,559x = 179,272,369.14 × 77,696,593.58
  4. Step 4: Simplify right side
    129,907,559x = 13,928,852,405,194,312
  5. Step 5: Solve for x
    x = 13,928,852,405,194,312/129,907,559
  6. Step 6: Final answer
    x = 107,221,261.89

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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.