Home / 189,319.56-261,261.74-103,280.38

Finding the Fourth Proportional to 189,319.56, 261,261.74 and 103,280.38

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Solution

The fourth proportional to 189,319.56, 261,261.74 and 103,280.38 is: 142,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,319.56 : 261,261.74 = 103,280.38 : x
  2. Step 2: Convert to fraction form
    189,319.56/261,261.74 = 103,280.38/x
  3. Step 3: Cross multiply
    189,319.56x = 261,261.74 × 103,280.38
  4. Step 4: Simplify right side
    189,319.56x = 26,983,210,617.11
  5. Step 5: Solve for x
    x = 26,983,210,617.11/189,319.56
  6. Step 6: Final answer
    x = 142,527.33

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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.