Home / 137,082.41-189,172.65-76,653.17

Finding the Fourth Proportional to 137,082.41, 189,172.65 and 76,653.17

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Solution

The fourth proportional to 137,082.41, 189,172.65 and 76,653.17 is: 105,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,082.41 : 189,172.65 = 76,653.17 : x
  2. Step 2: Convert to fraction form
    137,082.41/189,172.65 = 76,653.17/x
  3. Step 3: Cross multiply
    137,082.41x = 189,172.65 × 76,653.17
  4. Step 4: Simplify right side
    137,082.41x = 14,500,681,970.67
  5. Step 5: Solve for x
    x = 14,500,681,970.67/137,082.41
  6. Step 6: Final answer
    x = 105,780.77

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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.