Home / 123,631.28-170,548.36-78,232.72

Finding the Fourth Proportional to 123,631.28, 170,548.36 and 78,232.72

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Solution

The fourth proportional to 123,631.28, 170,548.36 and 78,232.72 is: 107,921.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,631.28 : 170,548.36 = 78,232.72 : x
  2. Step 2: Convert to fraction form
    123,631.28/170,548.36 = 78,232.72/x
  3. Step 3: Cross multiply
    123,631.28x = 170,548.36 × 78,232.72
  4. Step 4: Simplify right side
    123,631.28x = 13,342,462,094.34
  5. Step 5: Solve for x
    x = 13,342,462,094.34/123,631.28
  6. Step 6: Final answer
    x = 107,921.41

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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.