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Finding the Fourth Proportional to 225,075.60, 310,591.80 and 123,080.76

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Solution

The fourth proportional to 225,075.60, 310,591.80 and 123,080.76 is: 169,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,075.60 : 310,591.80 = 123,080.76 : x
  2. Step 2: Convert to fraction form
    225,075.60/310,591.80 = 123,080.76/x
  3. Step 3: Cross multiply
    225,075.60x = 310,591.80 × 123,080.76
  4. Step 4: Simplify right side
    225,075.60x = 38,227,874,793.77
  5. Step 5: Solve for x
    x = 38,227,874,793.77/225,075.60
  6. Step 6: Final answer
    x = 169,844.60

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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.