Home / 154,064.48-212,610.39-90,403.34

Finding the Fourth Proportional to 154,064.48, 212,610.39 and 90,403.34

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Solution

The fourth proportional to 154,064.48, 212,610.39 and 90,403.34 is: 124,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,064.48 : 212,610.39 = 90,403.34 : x
  2. Step 2: Convert to fraction form
    154,064.48/212,610.39 = 90,403.34/x
  3. Step 3: Cross multiply
    154,064.48x = 212,610.39 × 90,403.34
  4. Step 4: Simplify right side
    154,064.48x = 19,220,689,374.70
  5. Step 5: Solve for x
    x = 19,220,689,374.70/154,064.48
  6. Step 6: Final answer
    x = 124,757.44

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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.