Home / 142,094.10-196,075.88-78,427.78

Finding the Fourth Proportional to 142,094.10, 196,075.88 and 78,427.78

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Solution

The fourth proportional to 142,094.10, 196,075.88 and 78,427.78 is: 108,222.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,094.10 : 196,075.88 = 78,427.78 : x
  2. Step 2: Convert to fraction form
    142,094.10/196,075.88 = 78,427.78/x
  3. Step 3: Cross multiply
    142,094.10x = 196,075.88 × 78,427.78
  4. Step 4: Simplify right side
    142,094.10x = 15,377,795,979.95
  5. Step 5: Solve for x
    x = 15,377,795,979.95/142,094.10
  6. Step 6: Final answer
    x = 108,222.62

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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.