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Finding the Fourth Proportional to 126,309.53, 174,307.13 and 69,720.89

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Solution

The fourth proportional to 126,309.53, 174,307.13 and 69,720.89 is: 96,214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,309.53 : 174,307.13 = 69,720.89 : x
  2. Step 2: Convert to fraction form
    126,309.53/174,307.13 = 69,720.89/x
  3. Step 3: Cross multiply
    126,309.53x = 174,307.13 × 69,720.89
  4. Step 4: Simplify right side
    126,309.53x = 12,152,847,888.34
  5. Step 5: Solve for x
    x = 12,152,847,888.34/126,309.53
  6. Step 6: Final answer
    x = 96,214.81

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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.