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Finding the Fourth Proportional to 126,598.40, 174,631.04 and 78,859.52

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Solution

The fourth proportional to 126,598.40, 174,631.04 and 78,859.52 is: 108,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,598.40 : 174,631.04 = 78,859.52 : x
  2. Step 2: Convert to fraction form
    126,598.40/174,631.04 = 78,859.52/x
  3. Step 3: Cross multiply
    126,598.40x = 174,631.04 × 78,859.52
  4. Step 4: Simplify right side
    126,598.40x = 13,771,319,991.50
  5. Step 5: Solve for x
    x = 13,771,319,991.50/126,598.40
  6. Step 6: Final answer
    x = 108,779.57

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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.