Home / 154,095.78-212,647.35-90,432.21

Finding the Fourth Proportional to 154,095.78, 212,647.35 and 90,432.21

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Solution

The fourth proportional to 154,095.78, 212,647.35 and 90,432.21 is: 124,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,095.78 : 212,647.35 = 90,432.21 : x
  2. Step 2: Convert to fraction form
    154,095.78/212,647.35 = 90,432.21/x
  3. Step 3: Cross multiply
    154,095.78x = 212,647.35 × 90,432.21
  4. Step 4: Simplify right side
    154,095.78x = 19,230,169,811.14
  5. Step 5: Solve for x
    x = 19,230,169,811.14/154,095.78
  6. Step 6: Final answer
    x = 124,793.62

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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.