Home / 154,225.22-212,768.17-100,490.63

Finding the Fourth Proportional to 154,225.22, 212,768.17 and 100,490.63

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Solution

The fourth proportional to 154,225.22, 212,768.17 and 100,490.63 is: 138,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,225.22 : 212,768.17 = 100,490.63 : x
  2. Step 2: Convert to fraction form
    154,225.22/212,768.17 = 100,490.63/x
  3. Step 3: Cross multiply
    154,225.22x = 212,768.17 × 100,490.63
  4. Step 4: Simplify right side
    154,225.22x = 21,381,206,132.18
  5. Step 5: Solve for x
    x = 21,381,206,132.18/154,225.22
  6. Step 6: Final answer
    x = 138,636.25

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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.