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Finding the Fourth Proportional to 134,857,683.72, 186,103,603.74 and 72,978,022.26

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Solution

The fourth proportional to 134,857,683.72, 186,103,603.74 and 72,978,022.26 is: 100,709,670.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,857,683.72 : 186,103,603.74 = 72,978,022.26 : x
  2. Step 2: Convert to fraction form
    134,857,683.72/186,103,603.74 = 72,978,022.26/x
  3. Step 3: Cross multiply
    134,857,683.72x = 186,103,603.74 × 72,978,022.26
  4. Step 4: Simplify right side
    134,857,683.72x = 13,581,472,936,403,940
  5. Step 5: Solve for x
    x = 13,581,472,936,403,940/134,857,683.72
  6. Step 6: Final answer
    x = 100,709,670.83

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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.