Home / 134,920.69-186,206.95-78,332.06

Finding the Fourth Proportional to 134,920.69, 186,206.95 and 78,332.06

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Solution

The fourth proportional to 134,920.69, 186,206.95 and 78,332.06 is: 108,107.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,920.69 : 186,206.95 = 78,332.06 : x
  2. Step 2: Convert to fraction form
    134,920.69/186,206.95 = 78,332.06/x
  3. Step 3: Cross multiply
    134,920.69x = 186,206.95 × 78,332.06
  4. Step 4: Simplify right side
    134,920.69x = 14,585,974,543.25
  5. Step 5: Solve for x
    x = 14,585,974,543.25/134,920.69
  6. Step 6: Final answer
    x = 108,107.77

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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.