Home / 103,474,881.20-155,212,321.80-86,468,769.20

Finding the Fourth Proportional to 103,474,881.20, 155,212,321.80 and 86,468,769.20

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Solution

The fourth proportional to 103,474,881.20, 155,212,321.80 and 86,468,769.20 is: 129,703,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,474,881.20 : 155,212,321.80 = 86,468,769.20 : x
  2. Step 2: Convert to fraction form
    103,474,881.20/155,212,321.80 = 86,468,769.20/x
  3. Step 3: Cross multiply
    103,474,881.20x = 155,212,321.80 × 86,468,769.20
  4. Step 4: Simplify right side
    103,474,881.20x = 13,421,018,430,720,330
  5. Step 5: Solve for x
    x = 13,421,018,430,720,330/103,474,881.20
  6. Step 6: Final answer
    x = 129,703,153.80

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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.