Home / 103,195.63-142,401.67-57,256.75

Finding the Fourth Proportional to 103,195.63, 142,401.67 and 57,256.75

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Solution

The fourth proportional to 103,195.63, 142,401.67 and 57,256.75 is: 79,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,195.63 : 142,401.67 = 57,256.75 : x
  2. Step 2: Convert to fraction form
    103,195.63/142,401.67 = 57,256.75/x
  3. Step 3: Cross multiply
    103,195.63x = 142,401.67 × 57,256.75
  4. Step 4: Simplify right side
    103,195.63x = 8,153,456,818.77
  5. Step 5: Solve for x
    x = 8,153,456,818.77/103,195.63
  6. Step 6: Final answer
    x = 79,009.71

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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.