Home / 129,095.46-178,168.41-72,506.84

Finding the Fourth Proportional to 129,095.46, 178,168.41 and 72,506.84

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Solution

The fourth proportional to 129,095.46, 178,168.41 and 72,506.84 is: 100,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,095.46 : 178,168.41 = 72,506.84 : x
  2. Step 2: Convert to fraction form
    129,095.46/178,168.41 = 72,506.84/x
  3. Step 3: Cross multiply
    129,095.46x = 178,168.41 × 72,506.84
  4. Step 4: Simplify right side
    129,095.46x = 12,918,427,506.08
  5. Step 5: Solve for x
    x = 12,918,427,506.08/129,095.46
  6. Step 6: Final answer
    x = 100,068.80

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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.