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Finding the Fourth Proportional to 111,273.88, 153,533.70 and 65,929.20

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Solution

The fourth proportional to 111,273.88, 153,533.70 and 65,929.20 is: 90,967.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,273.88 : 153,533.70 = 65,929.20 : x
  2. Step 2: Convert to fraction form
    111,273.88/153,533.70 = 65,929.20/x
  3. Step 3: Cross multiply
    111,273.88x = 153,533.70 × 65,929.20
  4. Step 4: Simplify right side
    111,273.88x = 10,122,354,014.04
  5. Step 5: Solve for x
    x = 10,122,354,014.04/111,273.88
  6. Step 6: Final answer
    x = 90,967.93

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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.