Home / 212,243.64-318,341.16-79,128.24

Finding the Fourth Proportional to 212,243.64, 318,341.16 and 79,128.24

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Solution

The fourth proportional to 212,243.64, 318,341.16 and 79,128.24 is: 118,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,243.64 : 318,341.16 = 79,128.24 : x
  2. Step 2: Convert to fraction form
    212,243.64/318,341.16 = 79,128.24/x
  3. Step 3: Cross multiply
    212,243.64x = 318,341.16 × 79,128.24
  4. Step 4: Simplify right side
    212,243.64x = 25,189,775,710.36
  5. Step 5: Solve for x
    x = 25,189,775,710.36/212,243.64
  6. Step 6: Final answer
    x = 118,683.30

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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.