Home / 121,667.22-182,502-42,782.10

Finding the Fourth Proportional to 121,667.22, 182,502 and 42,782.10

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Solution

The fourth proportional to 121,667.22, 182,502 and 42,782.10 is: 64,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,667.22 : 182,502 = 42,782.10 : x
  2. Step 2: Convert to fraction form
    121,667.22/182,502 = 42,782.10/x
  3. Step 3: Cross multiply
    121,667.22x = 182,502 × 42,782.10
  4. Step 4: Simplify right side
    121,667.22x = 7,807,818,814.20
  5. Step 5: Solve for x
    x = 7,807,818,814.20/121,667.22
  6. Step 6: Final answer
    x = 64,173.56

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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.