Home / 210,504.16-315,981.02-90,620.45

Finding the Fourth Proportional to 210,504.16, 315,981.02 and 90,620.45

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Solution

The fourth proportional to 210,504.16, 315,981.02 and 90,620.45 is: 136,027.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,504.16 : 315,981.02 = 90,620.45 : x
  2. Step 2: Convert to fraction form
    210,504.16/315,981.02 = 90,620.45/x
  3. Step 3: Cross multiply
    210,504.16x = 315,981.02 × 90,620.45
  4. Step 4: Simplify right side
    210,504.16x = 28,634,340,190.85
  5. Step 5: Solve for x
    x = 28,634,340,190.85/210,504.16
  6. Step 6: Final answer
    x = 136,027.43

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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.