Home / 211,139.56-316,720.20-53,369.36

Finding the Fourth Proportional to 211,139.56, 316,720.20 and 53,369.36

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Solution

The fourth proportional to 211,139.56, 316,720.20 and 53,369.36 is: 80,056.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,139.56 : 316,720.20 = 53,369.36 : x
  2. Step 2: Convert to fraction form
    211,139.56/316,720.20 = 53,369.36/x
  3. Step 3: Cross multiply
    211,139.56x = 316,720.20 × 53,369.36
  4. Step 4: Simplify right side
    211,139.56x = 16,903,154,373.07
  5. Step 5: Solve for x
    x = 16,903,154,373.07/211,139.56
  6. Step 6: Final answer
    x = 80,056.79

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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.