Home / 105,651,854.50-145,737,788.88-66,431,537.86

Finding the Fourth Proportional to 105,651,854.50, 145,737,788.88 and 66,431,537.86

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Solution

The fourth proportional to 105,651,854.50, 145,737,788.88 and 66,431,537.86 is: 91,636,682.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,651,854.50 : 145,737,788.88 = 66,431,537.86 : x
  2. Step 2: Convert to fraction form
    105,651,854.50/145,737,788.88 = 66,431,537.86/x
  3. Step 3: Cross multiply
    105,651,854.50x = 145,737,788.88 × 66,431,537.86
  4. Step 4: Simplify right side
    105,651,854.50x = 9,681,585,439,614,406
  5. Step 5: Solve for x
    x = 9,681,585,439,614,406/105,651,854.50
  6. Step 6: Final answer
    x = 91,636,682.44

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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.