Home / 119,329.76-178,985.27-69,378

Finding the Fourth Proportional to 119,329.76, 178,985.27 and 69,378

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Solution

The fourth proportional to 119,329.76, 178,985.27 and 69,378 is: 104,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,329.76 : 178,985.27 = 69,378 : x
  2. Step 2: Convert to fraction form
    119,329.76/178,985.27 = 69,378/x
  3. Step 3: Cross multiply
    119,329.76x = 178,985.27 × 69,378
  4. Step 4: Simplify right side
    119,329.76x = 12,417,639,715.17
  5. Step 5: Solve for x
    x = 12,417,639,715.17/119,329.76
  6. Step 6: Final answer
    x = 104,061.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.