Home / 106,513.15-159,617.48-78,211.14

Finding the Fourth Proportional to 106,513.15, 159,617.48 and 78,211.14

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Solution

The fourth proportional to 106,513.15, 159,617.48 and 78,211.14 is: 117,204.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,513.15 : 159,617.48 = 78,211.14 : x
  2. Step 2: Convert to fraction form
    106,513.15/159,617.48 = 78,211.14/x
  3. Step 3: Cross multiply
    106,513.15x = 159,617.48 × 78,211.14
  4. Step 4: Simplify right side
    106,513.15x = 12,483,864,683.67
  5. Step 5: Solve for x
    x = 12,483,864,683.67/106,513.15
  6. Step 6: Final answer
    x = 117,204.92

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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.