Home / 115,381.78-159,228.93-67,669.54

Finding the Fourth Proportional to 115,381.78, 159,228.93 and 67,669.54

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Solution

The fourth proportional to 115,381.78, 159,228.93 and 67,669.54 is: 93,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,381.78 : 159,228.93 = 67,669.54 : x
  2. Step 2: Convert to fraction form
    115,381.78/159,228.93 = 67,669.54/x
  3. Step 3: Cross multiply
    115,381.78x = 159,228.93 × 67,669.54
  4. Step 4: Simplify right side
    115,381.78x = 10,774,948,447.79
  5. Step 5: Solve for x
    x = 10,774,948,447.79/115,381.78
  6. Step 6: Final answer
    x = 93,385.18

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1.5x scale

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.