Home / 211,191.10-291,457.65-120,565.42

Finding the Fourth Proportional to 211,191.10, 291,457.65 and 120,565.42

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Solution

The fourth proportional to 211,191.10, 291,457.65 and 120,565.42 is: 166,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,191.10 : 291,457.65 = 120,565.42 : x
  2. Step 2: Convert to fraction form
    211,191.10/291,457.65 = 120,565.42/x
  3. Step 3: Cross multiply
    211,191.10x = 291,457.65 × 120,565.42
  4. Step 4: Simplify right side
    211,191.10x = 35,139,713,984.46
  5. Step 5: Solve for x
    x = 35,139,713,984.46/211,191.10
  6. Step 6: Final answer
    x = 166,388.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.