Home / 137,345.28-189,521.28-83,708.16

Finding the Fourth Proportional to 137,345.28, 189,521.28 and 83,708.16

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Solution

The fourth proportional to 137,345.28, 189,521.28 and 83,708.16 is: 115,507.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,345.28 : 189,521.28 = 83,708.16 : x
  2. Step 2: Convert to fraction form
    137,345.28/189,521.28 = 83,708.16/x
  3. Step 3: Cross multiply
    137,345.28x = 189,521.28 × 83,708.16
  4. Step 4: Simplify right side
    137,345.28x = 15,864,477,629.64
  5. Step 5: Solve for x
    x = 15,864,477,629.64/137,345.28
  6. Step 6: Final answer
    x = 115,507.99

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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.