Home / 212,209.36-318,345.69-70,069.65

Finding the Fourth Proportional to 212,209.36, 318,345.69 and 70,069.65

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Solution

The fourth proportional to 212,209.36, 318,345.69 and 70,069.65 is: 105,114.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,209.36 : 318,345.69 = 70,069.65 : x
  2. Step 2: Convert to fraction form
    212,209.36/318,345.69 = 70,069.65/x
  3. Step 3: Cross multiply
    212,209.36x = 318,345.69 × 70,069.65
  4. Step 4: Simplify right side
    212,209.36x = 22,306,370,416.62
  5. Step 5: Solve for x
    x = 22,306,370,416.62/212,209.36
  6. Step 6: Final answer
    x = 105,114.92

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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.