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Finding the Fourth Proportional to 118,701.77, 178,079.31 and 39,813.98

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Solution

The fourth proportional to 118,701.77, 178,079.31 and 39,813.98 is: 59,729.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.77 : 178,079.31 = 39,813.98 : x
  2. Step 2: Convert to fraction form
    118,701.77/178,079.31 = 39,813.98/x
  3. Step 3: Cross multiply
    118,701.77x = 178,079.31 × 39,813.98
  4. Step 4: Simplify right side
    118,701.77x = 7,090,045,196.36
  5. Step 5: Solve for x
    x = 7,090,045,196.36/118,701.77
  6. Step 6: Final answer
    x = 59,729.91

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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.