Home / 121,903,638.30-168,179,130.09-69,664,648.50

Finding the Fourth Proportional to 121,903,638.30, 168,179,130.09 and 69,664,648.50

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Solution

The fourth proportional to 121,903,638.30, 168,179,130.09 and 69,664,648.50 is: 96,109,846.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,903,638.30 : 168,179,130.09 = 69,664,648.50 : x
  2. Step 2: Convert to fraction form
    121,903,638.30/168,179,130.09 = 69,664,648.50/x
  3. Step 3: Cross multiply
    121,903,638.30x = 168,179,130.09 × 69,664,648.50
  4. Step 4: Simplify right side
    121,903,638.30x = 11,716,139,982,755,624
  5. Step 5: Solve for x
    x = 11,716,139,982,755,624/121,903,638.30
  6. Step 6: Final answer
    x = 96,109,846.65

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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.