Home / 103,680,542.60-155,520,813.90-76,806,686.60

Finding the Fourth Proportional to 103,680,542.60, 155,520,813.90 and 76,806,686.60

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Solution

The fourth proportional to 103,680,542.60, 155,520,813.90 and 76,806,686.60 is: 115,210,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,542.60 : 155,520,813.90 = 76,806,686.60 : x
  2. Step 2: Convert to fraction form
    103,680,542.60/155,520,813.90 = 76,806,686.60/x
  3. Step 3: Cross multiply
    103,680,542.60x = 155,520,813.90 × 76,806,686.60
  4. Step 4: Simplify right side
    103,680,542.60x = 11,945,038,412,994,224
  5. Step 5: Solve for x
    x = 11,945,038,412,994,224/103,680,542.60
  6. Step 6: Final answer
    x = 115,210,029.90

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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.