Home / 261,520.10-392,316.60-111,759.20

Finding the Fourth Proportional to 261,520.10, 392,316.60 and 111,759.20

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Solution

The fourth proportional to 261,520.10, 392,316.60 and 111,759.20 is: 167,654.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,520.10 : 392,316.60 = 111,759.20 : x
  2. Step 2: Convert to fraction form
    261,520.10/392,316.60 = 111,759.20/x
  3. Step 3: Cross multiply
    261,520.10x = 392,316.60 × 111,759.20
  4. Step 4: Simplify right side
    261,520.10x = 43,844,989,362.72
  5. Step 5: Solve for x
    x = 43,844,989,362.72/261,520.10
  6. Step 6: Final answer
    x = 167,654.38

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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.