Home / 137,316.72-189,464.40-83,601.12

Finding the Fourth Proportional to 137,316.72, 189,464.40 and 83,601.12

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Solution

The fourth proportional to 137,316.72, 189,464.40 and 83,601.12 is: 115,349.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,316.72 : 189,464.40 = 83,601.12 : x
  2. Step 2: Convert to fraction form
    137,316.72/189,464.40 = 83,601.12/x
  3. Step 3: Cross multiply
    137,316.72x = 189,464.40 × 83,601.12
  4. Step 4: Simplify right side
    137,316.72x = 15,839,436,040.13
  5. Step 5: Solve for x
    x = 15,839,436,040.13/137,316.72
  6. Step 6: Final answer
    x = 115,349.65

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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.