Home / 210,651.21-316,056.60-126,470.16

Finding the Fourth Proportional to 210,651.21, 316,056.60 and 126,470.16

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Solution

The fourth proportional to 210,651.21, 316,056.60 and 126,470.16 is: 189,753.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,651.21 : 316,056.60 = 126,470.16 : x
  2. Step 2: Convert to fraction form
    210,651.21/316,056.60 = 126,470.16/x
  3. Step 3: Cross multiply
    210,651.21x = 316,056.60 × 126,470.16
  4. Step 4: Simplify right side
    210,651.21x = 39,971,728,771.06
  5. Step 5: Solve for x
    x = 39,971,728,771.06/210,651.21
  6. Step 6: Final answer
    x = 189,753.14

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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.