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Finding the Fourth Proportional to 118,280.66, 163,285.90 and 75,302.88

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Solution

The fourth proportional to 118,280.66, 163,285.90 and 75,302.88 is: 103,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,280.66 : 163,285.90 = 75,302.88 : x
  2. Step 2: Convert to fraction form
    118,280.66/163,285.90 = 75,302.88/x
  3. Step 3: Cross multiply
    118,280.66x = 163,285.90 × 75,302.88
  4. Step 4: Simplify right side
    118,280.66x = 12,295,898,533.39
  5. Step 5: Solve for x
    x = 12,295,898,533.39/118,280.66
  6. Step 6: Final answer
    x = 103,955.27

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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.