Home / 100,163.63-138,225.33-54,223.31

Finding the Fourth Proportional to 100,163.63, 138,225.33 and 54,223.31

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Solution

The fourth proportional to 100,163.63, 138,225.33 and 54,223.31 is: 74,827.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,163.63 : 138,225.33 = 54,223.31 : x
  2. Step 2: Convert to fraction form
    100,163.63/138,225.33 = 54,223.31/x
  3. Step 3: Cross multiply
    100,163.63x = 138,225.33 × 54,223.31
  4. Step 4: Simplify right side
    100,163.63x = 7,495,034,227.32
  5. Step 5: Solve for x
    x = 7,495,034,227.32/100,163.63
  6. Step 6: Final answer
    x = 74,827.91

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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.