Home / 137,241.24-189,391.68-76,811.20

Finding the Fourth Proportional to 137,241.24, 189,391.68 and 76,811.20

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Solution

The fourth proportional to 137,241.24, 189,391.68 and 76,811.20 is: 105,998.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,241.24 : 189,391.68 = 76,811.20 : x
  2. Step 2: Convert to fraction form
    137,241.24/189,391.68 = 76,811.20/x
  3. Step 3: Cross multiply
    137,241.24x = 189,391.68 × 76,811.20
  4. Step 4: Simplify right side
    137,241.24x = 14,547,402,210.82
  5. Step 5: Solve for x
    x = 14,547,402,210.82/137,241.24
  6. Step 6: Final answer
    x = 105,998.77

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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.