Home / 129,312.04-178,475.12-80,936.41

Finding the Fourth Proportional to 129,312.04, 178,475.12 and 80,936.41

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Solution

The fourth proportional to 129,312.04, 178,475.12 and 80,936.41 is: 111,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,312.04 : 178,475.12 = 80,936.41 : x
  2. Step 2: Convert to fraction form
    129,312.04/178,475.12 = 80,936.41/x
  3. Step 3: Cross multiply
    129,312.04x = 178,475.12 × 80,936.41
  4. Step 4: Simplify right side
    129,312.04x = 14,445,135,487.12
  5. Step 5: Solve for x
    x = 14,445,135,487.12/129,312.04
  6. Step 6: Final answer
    x = 111,707.58

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1.5x scale

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.