Home / 212,565.51-318,865.19-70,405.07

Finding the Fourth Proportional to 212,565.51, 318,865.19 and 70,405.07

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Solution

The fourth proportional to 212,565.51, 318,865.19 and 70,405.07 is: 105,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,565.51 : 318,865.19 = 70,405.07 : x
  2. Step 2: Convert to fraction form
    212,565.51/318,865.19 = 70,405.07/x
  3. Step 3: Cross multiply
    212,565.51x = 318,865.19 × 70,405.07
  4. Step 4: Simplify right side
    212,565.51x = 22,449,724,076.16
  5. Step 5: Solve for x
    x = 22,449,724,076.16/212,565.51
  6. Step 6: Final answer
    x = 105,613.20

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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.