Home / 111,579.08-153,975.48-79,801.16

Finding the Fourth Proportional to 111,579.08, 153,975.48 and 79,801.16

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Solution

The fourth proportional to 111,579.08, 153,975.48 and 79,801.16 is: 110,122.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.08 : 153,975.48 = 79,801.16 : x
  2. Step 2: Convert to fraction form
    111,579.08/153,975.48 = 79,801.16/x
  3. Step 3: Cross multiply
    111,579.08x = 153,975.48 × 79,801.16
  4. Step 4: Simplify right side
    111,579.08x = 12,287,421,915.56
  5. Step 5: Solve for x
    x = 12,287,421,915.56/111,579.08
  6. Step 6: Final answer
    x = 110,122.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.