Home / 131,115,221.40-196,896,780.90-85,877,563.80

Finding the Fourth Proportional to 131,115,221.40, 196,896,780.90 and 85,877,563.80

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Solution

The fourth proportional to 131,115,221.40, 196,896,780.90 and 85,877,563.80 is: 128,963,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,115,221.40 : 196,896,780.90 = 85,877,563.80 : x
  2. Step 2: Convert to fraction form
    131,115,221.40/196,896,780.90 = 85,877,563.80/x
  3. Step 3: Cross multiply
    131,115,221.40x = 196,896,780.90 × 85,877,563.80
  4. Step 4: Simplify right side
    131,115,221.40x = 16,909,015,863,754,372
  5. Step 5: Solve for x
    x = 16,909,015,863,754,372/131,115,221.40
  6. Step 6: Final answer
    x = 128,963,027.20

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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.