Home / 421,981.41-632,972.13-126,493.41

Finding the Fourth Proportional to 421,981.41, 632,972.13 and 126,493.41

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Solution

The fourth proportional to 421,981.41, 632,972.13 and 126,493.41 is: 189,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,981.41 : 632,972.13 = 126,493.41 : x
  2. Step 2: Convert to fraction form
    421,981.41/632,972.13 = 126,493.41/x
  3. Step 3: Cross multiply
    421,981.41x = 632,972.13 × 126,493.41
  4. Step 4: Simplify right side
    421,981.41x = 80,066,803,158.66
  5. Step 5: Solve for x
    x = 80,066,803,158.66/421,981.41
  6. Step 6: Final answer
    x = 189,740.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.