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Finding the Fourth Proportional to 117,006.40, 175,509.60 and 87,630.40

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Solution

The fourth proportional to 117,006.40, 175,509.60 and 87,630.40 is: 131,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,006.40 : 175,509.60 = 87,630.40 : x
  2. Step 2: Convert to fraction form
    117,006.40/175,509.60 = 87,630.40/x
  3. Step 3: Cross multiply
    117,006.40x = 175,509.60 × 87,630.40
  4. Step 4: Simplify right side
    117,006.40x = 15,379,976,451.84
  5. Step 5: Solve for x
    x = 15,379,976,451.84/117,006.40
  6. Step 6: Final answer
    x = 131,445.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.