Home / 118,780.98-163,920.39-67,792.68

Finding the Fourth Proportional to 118,780.98, 163,920.39 and 67,792.68

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Solution

The fourth proportional to 118,780.98, 163,920.39 and 67,792.68 is: 93,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,780.98 : 163,920.39 = 67,792.68 : x
  2. Step 2: Convert to fraction form
    118,780.98/163,920.39 = 67,792.68/x
  3. Step 3: Cross multiply
    118,780.98x = 163,920.39 × 67,792.68
  4. Step 4: Simplify right side
    118,780.98x = 11,112,602,544.75
  5. Step 5: Solve for x
    x = 11,112,602,544.75/118,780.98
  6. Step 6: Final answer
    x = 93,555.40

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1.5x scale

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.