Home / 154,401.25-212,904.53-100,586.47

Finding the Fourth Proportional to 154,401.25, 212,904.53 and 100,586.47

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Solution

The fourth proportional to 154,401.25, 212,904.53 and 100,586.47 is: 138,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,401.25 : 212,904.53 = 100,586.47 : x
  2. Step 2: Convert to fraction form
    154,401.25/212,904.53 = 100,586.47/x
  3. Step 3: Cross multiply
    154,401.25x = 212,904.53 × 100,586.47
  4. Step 4: Simplify right side
    154,401.25x = 21,415,314,882.91
  5. Step 5: Solve for x
    x = 21,415,314,882.91/154,401.25
  6. Step 6: Final answer
    x = 138,699.10

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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.