Home / 118,780.74-178,115.40-68,875.02

Finding the Fourth Proportional to 118,780.74, 178,115.40 and 68,875.02

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Solution

The fourth proportional to 118,780.74, 178,115.40 and 68,875.02 is: 103,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,780.74 : 178,115.40 = 68,875.02 : x
  2. Step 2: Convert to fraction form
    118,780.74/178,115.40 = 68,875.02/x
  3. Step 3: Cross multiply
    118,780.74x = 178,115.40 × 68,875.02
  4. Step 4: Simplify right side
    118,780.74x = 12,267,701,737.31
  5. Step 5: Solve for x
    x = 12,267,701,737.31/118,780.74
  6. Step 6: Final answer
    x = 103,280.23

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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.