Home / 129,370.02-178,457.70-77,673.90

Finding the Fourth Proportional to 129,370.02, 178,457.70 and 77,673.90

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Solution

The fourth proportional to 129,370.02, 178,457.70 and 77,673.90 is: 107,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,370.02 : 178,457.70 = 77,673.90 : x
  2. Step 2: Convert to fraction form
    129,370.02/178,457.70 = 77,673.90/x
  3. Step 3: Cross multiply
    129,370.02x = 178,457.70 × 77,673.90
  4. Step 4: Simplify right side
    129,370.02x = 13,861,505,544.03
  5. Step 5: Solve for x
    x = 13,861,505,544.03/129,370.02
  6. Step 6: Final answer
    x = 107,146.20

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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.