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Finding the Fourth Proportional to 118,235.80, 176,841.70 and 105,845.40

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Solution

The fourth proportional to 118,235.80, 176,841.70 and 105,845.40 is: 158,309.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,235.80 : 176,841.70 = 105,845.40 : x
  2. Step 2: Convert to fraction form
    118,235.80/176,841.70 = 105,845.40/x
  3. Step 3: Cross multiply
    118,235.80x = 176,841.70 × 105,845.40
  4. Step 4: Simplify right side
    118,235.80x = 18,717,880,473.18
  5. Step 5: Solve for x
    x = 18,717,880,473.18/118,235.80
  6. Step 6: Final answer
    x = 158,309.75

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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.