Home / 129,621.50-178,877.67-70,005.50

Finding the Fourth Proportional to 129,621.50, 178,877.67 and 70,005.50

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Solution

The fourth proportional to 129,621.50, 178,877.67 and 70,005.50 is: 96,607.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,621.50 : 178,877.67 = 70,005.50 : x
  2. Step 2: Convert to fraction form
    129,621.50/178,877.67 = 70,005.50/x
  3. Step 3: Cross multiply
    129,621.50x = 178,877.67 × 70,005.50
  4. Step 4: Simplify right side
    129,621.50x = 12,522,420,727.19
  5. Step 5: Solve for x
    x = 12,522,420,727.19/129,621.50
  6. Step 6: Final answer
    x = 96,607.59

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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.