Home / 261,746.54-392,661.12-111,987.80

Finding the Fourth Proportional to 261,746.54, 392,661.12 and 111,987.80

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Solution

The fourth proportional to 261,746.54, 392,661.12 and 111,987.80 is: 167,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,746.54 : 392,661.12 = 111,987.80 : x
  2. Step 2: Convert to fraction form
    261,746.54/392,661.12 = 111,987.80/x
  3. Step 3: Cross multiply
    261,746.54x = 392,661.12 × 111,987.80
  4. Step 4: Simplify right side
    261,746.54x = 43,973,254,974.34
  5. Step 5: Solve for x
    x = 43,973,254,974.34/261,746.54
  6. Step 6: Final answer
    x = 167,999.37

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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.