Home / 228,721.95-315,638.15-126,749.12

Finding the Fourth Proportional to 228,721.95, 315,638.15 and 126,749.12

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Solution

The fourth proportional to 228,721.95, 315,638.15 and 126,749.12 is: 174,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,721.95 : 315,638.15 = 126,749.12 : x
  2. Step 2: Convert to fraction form
    228,721.95/315,638.15 = 126,749.12/x
  3. Step 3: Cross multiply
    228,721.95x = 315,638.15 × 126,749.12
  4. Step 4: Simplify right side
    228,721.95x = 40,006,855,538.99
  5. Step 5: Solve for x
    x = 40,006,855,538.99/228,721.95
  6. Step 6: Final answer
    x = 174,914.81

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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.