Home / 129,215.04-178,316.70-72,626.41

Finding the Fourth Proportional to 129,215.04, 178,316.70 and 72,626.41

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Solution

The fourth proportional to 129,215.04, 178,316.70 and 72,626.41 is: 100,224.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,215.04 : 178,316.70 = 72,626.41 : x
  2. Step 2: Convert to fraction form
    129,215.04/178,316.70 = 72,626.41/x
  3. Step 3: Cross multiply
    129,215.04x = 178,316.70 × 72,626.41
  4. Step 4: Simplify right side
    129,215.04x = 12,950,501,764.05
  5. Step 5: Solve for x
    x = 12,950,501,764.05/129,215.04
  6. Step 6: Final answer
    x = 100,224.41

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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.