Home / 211,575.72-317,161.14-78,420.18

Finding the Fourth Proportional to 211,575.72, 317,161.14 and 78,420.18

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Solution

The fourth proportional to 211,575.72, 317,161.14 and 78,420.18 is: 117,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,575.72 : 317,161.14 = 78,420.18 : x
  2. Step 2: Convert to fraction form
    211,575.72/317,161.14 = 78,420.18/x
  3. Step 3: Cross multiply
    211,575.72x = 317,161.14 × 78,420.18
  4. Step 4: Simplify right side
    211,575.72x = 24,871,833,687.81
  5. Step 5: Solve for x
    x = 24,871,833,687.81/211,575.72
  6. Step 6: Final answer
    x = 117,555.24

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1.5x scale

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.