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Finding the Fourth Proportional to 118,172.52, 163,078.04 and 87,983.80

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Solution

The fourth proportional to 118,172.52, 163,078.04 and 87,983.80 is: 121,417.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,172.52 : 163,078.04 = 87,983.80 : x
  2. Step 2: Convert to fraction form
    118,172.52/163,078.04 = 87,983.80/x
  3. Step 3: Cross multiply
    118,172.52x = 163,078.04 × 87,983.80
  4. Step 4: Simplify right side
    118,172.52x = 14,348,225,655.75
  5. Step 5: Solve for x
    x = 14,348,225,655.75/118,172.52
  6. Step 6: Final answer
    x = 121,417.62

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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.