Home / 91,341,405.03-137,129,024.57-78,469,904.01

Finding the Fourth Proportional to 91,341,405.03, 137,129,024.57 and 78,469,904.01

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Solution

The fourth proportional to 91,341,405.03, 137,129,024.57 and 78,469,904.01 is: 117,805,297.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,341,405.03 : 137,129,024.57 = 78,469,904.01 : x
  2. Step 2: Convert to fraction form
    91,341,405.03/137,129,024.57 = 78,469,904.01/x
  3. Step 3: Cross multiply
    91,341,405.03x = 137,129,024.57 × 78,469,904.01
  4. Step 4: Simplify right side
    91,341,405.03x = 10,760,501,395,114,716
  5. Step 5: Solve for x
    x = 10,760,501,395,114,716/91,341,405.03
  6. Step 6: Final answer
    x = 117,805,297.51

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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.