Home / 137,246.65-189,357.19-76,807.69

Finding the Fourth Proportional to 137,246.65, 189,357.19 and 76,807.69

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Solution

The fourth proportional to 137,246.65, 189,357.19 and 76,807.69 is: 105,970.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,246.65 : 189,357.19 = 76,807.69 : x
  2. Step 2: Convert to fraction form
    137,246.65/189,357.19 = 76,807.69/x
  3. Step 3: Cross multiply
    137,246.65x = 189,357.19 × 76,807.69
  4. Step 4: Simplify right side
    137,246.65x = 14,544,087,402.01
  5. Step 5: Solve for x
    x = 14,544,087,402.01/137,246.65
  6. Step 6: Final answer
    x = 105,970.44

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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.