Home / 119,329.77-178,985.25-69,378

Finding the Fourth Proportional to 119,329.77, 178,985.25 and 69,378

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Solution

The fourth proportional to 119,329.77, 178,985.25 and 69,378 is: 104,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,329.77 : 178,985.25 = 69,378 : x
  2. Step 2: Convert to fraction form
    119,329.77/178,985.25 = 69,378/x
  3. Step 3: Cross multiply
    119,329.77x = 178,985.25 × 69,378
  4. Step 4: Simplify right side
    119,329.77x = 12,417,638,674.50
  5. Step 5: Solve for x
    x = 12,417,638,674.50/119,329.77
  6. Step 6: Final answer
    x = 104,061.53

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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.