Home / 129,729,078.18-179,026,139.43-70,991,740.26

Finding the Fourth Proportional to 129,729,078.18, 179,026,139.43 and 70,991,740.26

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Solution

The fourth proportional to 129,729,078.18, 179,026,139.43 and 70,991,740.26 is: 97,968,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,729,078.18 : 179,026,139.43 = 70,991,740.26 : x
  2. Step 2: Convert to fraction form
    129,729,078.18/179,026,139.43 = 70,991,740.26/x
  3. Step 3: Cross multiply
    129,729,078.18x = 179,026,139.43 × 70,991,740.26
  4. Step 4: Simplify right side
    129,729,078.18x = 12,709,377,190,165,106
  5. Step 5: Solve for x
    x = 12,709,377,190,165,106/129,729,078.18
  6. Step 6: Final answer
    x = 97,968,607.87

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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.