Home / 129,231.03-178,312.64-75,505.67

Finding the Fourth Proportional to 129,231.03, 178,312.64 and 75,505.67

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Solution

The fourth proportional to 129,231.03, 178,312.64 and 75,505.67 is: 104,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,231.03 : 178,312.64 = 75,505.67 : x
  2. Step 2: Convert to fraction form
    129,231.03/178,312.64 = 75,505.67/x
  3. Step 3: Cross multiply
    129,231.03x = 178,312.64 × 75,505.67
  4. Step 4: Simplify right side
    129,231.03x = 13,463,615,352.67
  5. Step 5: Solve for x
    x = 13,463,615,352.67/129,231.03
  6. Step 6: Final answer
    x = 104,182.53

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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.