Home / 91,412,748.70-137,038,409.55-69,943,196.60

Finding the Fourth Proportional to 91,412,748.70, 137,038,409.55 and 69,943,196.60

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Solution

The fourth proportional to 91,412,748.70, 137,038,409.55 and 69,943,196.60 is: 104,853,038.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,412,748.70 : 137,038,409.55 = 69,943,196.60 : x
  2. Step 2: Convert to fraction form
    91,412,748.70/137,038,409.55 = 69,943,196.60/x
  3. Step 3: Cross multiply
    91,412,748.70x = 137,038,409.55 × 69,943,196.60
  4. Step 4: Simplify right side
    91,412,748.70x = 9,584,904,420,735,670
  5. Step 5: Solve for x
    x = 9,584,904,420,735,670/91,412,748.70
  6. Step 6: Final answer
    x = 104,853,038.09

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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.