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Finding the Fourth Proportional to 118,278.50, 163,230.99 and 67,980.74

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Solution

The fourth proportional to 118,278.50, 163,230.99 and 67,980.74 is: 93,817.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,278.50 : 163,230.99 = 67,980.74 : x
  2. Step 2: Convert to fraction form
    118,278.50/163,230.99 = 67,980.74/x
  3. Step 3: Cross multiply
    118,278.50x = 163,230.99 × 67,980.74
  4. Step 4: Simplify right side
    118,278.50x = 11,096,563,491.13
  5. Step 5: Solve for x
    x = 11,096,563,491.13/118,278.50
  6. Step 6: Final answer
    x = 93,817.25

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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.