Home / 153,914,021.40-212,404,787.70-87,833,204.04

Finding the Fourth Proportional to 153,914,021.40, 212,404,787.70 and 87,833,204.04

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Solution

The fourth proportional to 153,914,021.40, 212,404,787.70 and 87,833,204.04 is: 121,211,783.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,914,021.40 : 212,404,787.70 = 87,833,204.04 : x
  2. Step 2: Convert to fraction form
    153,914,021.40/212,404,787.70 = 87,833,204.04/x
  3. Step 3: Cross multiply
    153,914,021.40x = 212,404,787.70 × 87,833,204.04
  4. Step 4: Simplify right side
    153,914,021.40x = 18,656,193,057,126,984
  5. Step 5: Solve for x
    x = 18,656,193,057,126,984/153,914,021.40
  6. Step 6: Final answer
    x = 121,211,783.61

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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.