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Finding the Fourth Proportional to 101,159.20, 151,738.80 and 69,666.40

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Solution

The fourth proportional to 101,159.20, 151,738.80 and 69,666.40 is: 104,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,159.20 : 151,738.80 = 69,666.40 : x
  2. Step 2: Convert to fraction form
    101,159.20/151,738.80 = 69,666.40/x
  3. Step 3: Cross multiply
    101,159.20x = 151,738.80 × 69,666.40
  4. Step 4: Simplify right side
    101,159.20x = 10,571,095,936.32
  5. Step 5: Solve for x
    x = 10,571,095,936.32/101,159.20
  6. Step 6: Final answer
    x = 104,499.60

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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.