Home / 212,191.85-318,116.16-69,948.36

Finding the Fourth Proportional to 212,191.85, 318,116.16 and 69,948.36

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Solution

The fourth proportional to 212,191.85, 318,116.16 and 69,948.36 is: 104,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,191.85 : 318,116.16 = 69,948.36 : x
  2. Step 2: Convert to fraction form
    212,191.85/318,116.16 = 69,948.36/x
  3. Step 3: Cross multiply
    212,191.85x = 318,116.16 × 69,948.36
  4. Step 4: Simplify right side
    212,191.85x = 22,251,703,681.50
  5. Step 5: Solve for x
    x = 22,251,703,681.50/212,191.85
  6. Step 6: Final answer
    x = 104,865.97

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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.