Home / 103,876,289.40-155,609,147.70-91,111,207.80

Finding the Fourth Proportional to 103,876,289.40, 155,609,147.70 and 91,111,207.80

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Solution

The fourth proportional to 103,876,289.40, 155,609,147.70 and 91,111,207.80 is: 136,486,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,876,289.40 : 155,609,147.70 = 91,111,207.80 : x
  2. Step 2: Convert to fraction form
    103,876,289.40/155,609,147.70 = 91,111,207.80/x
  3. Step 3: Cross multiply
    103,876,289.40x = 155,609,147.70 × 91,111,207.80
  4. Step 4: Simplify right side
    103,876,289.40x = 14,177,737,391,675,590
  5. Step 5: Solve for x
    x = 14,177,737,391,675,590/103,876,289.40
  6. Step 6: Final answer
    x = 136,486,752.40

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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.