Home / 154,638.52-213,254.22-100,906.36

Finding the Fourth Proportional to 154,638.52, 213,254.22 and 100,906.36

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Solution

The fourth proportional to 154,638.52, 213,254.22 and 100,906.36 is: 139,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,638.52 : 213,254.22 = 100,906.36 : x
  2. Step 2: Convert to fraction form
    154,638.52/213,254.22 = 100,906.36/x
  3. Step 3: Cross multiply
    154,638.52x = 213,254.22 × 100,906.36
  4. Step 4: Simplify right side
    154,638.52x = 21,518,707,094.84
  5. Step 5: Solve for x
    x = 21,518,707,094.84/154,638.52
  6. Step 6: Final answer
    x = 139,154.90

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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.