Home / 212,397.57-318,597.22-86,040.23

Finding the Fourth Proportional to 212,397.57, 318,597.22 and 86,040.23

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Solution

The fourth proportional to 212,397.57, 318,597.22 and 86,040.23 is: 129,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,397.57 : 318,597.22 = 86,040.23 : x
  2. Step 2: Convert to fraction form
    212,397.57/318,597.22 = 86,040.23/x
  3. Step 3: Cross multiply
    212,397.57x = 318,597.22 × 86,040.23
  4. Step 4: Simplify right side
    212,397.57x = 27,412,178,314.36
  5. Step 5: Solve for x
    x = 27,412,178,314.36/212,397.57
  6. Step 6: Final answer
    x = 129,060.69

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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.