Home / 210,784.55-315,873.67-90,808.56

Finding the Fourth Proportional to 210,784.55, 315,873.67 and 90,808.56

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Solution

The fourth proportional to 210,784.55, 315,873.67 and 90,808.56 is: 136,082.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,784.55 : 315,873.67 = 90,808.56 : x
  2. Step 2: Convert to fraction form
    210,784.55/315,873.67 = 90,808.56/x
  3. Step 3: Cross multiply
    210,784.55x = 315,873.67 × 90,808.56
  4. Step 4: Simplify right side
    210,784.55x = 28,684,033,114.62
  5. Step 5: Solve for x
    x = 28,684,033,114.62/210,784.55
  6. Step 6: Final answer
    x = 136,082.24

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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.