Home / 154,223.86-212,740.21-90,549.36

Finding the Fourth Proportional to 154,223.86, 212,740.21 and 90,549.36

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Solution

The fourth proportional to 154,223.86, 212,740.21 and 90,549.36 is: 124,906.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,223.86 : 212,740.21 = 90,549.36 : x
  2. Step 2: Convert to fraction form
    154,223.86/212,740.21 = 90,549.36/x
  3. Step 3: Cross multiply
    154,223.86x = 212,740.21 × 90,549.36
  4. Step 4: Simplify right side
    154,223.86x = 19,263,489,861.77
  5. Step 5: Solve for x
    x = 19,263,489,861.77/154,223.86
  6. Step 6: Final answer
    x = 124,906.03

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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.