Home / 130,768.30-180,454.80-74,190.34

Finding the Fourth Proportional to 130,768.30, 180,454.80 and 74,190.34

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Solution

The fourth proportional to 130,768.30, 180,454.80 and 74,190.34 is: 102,379.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,768.30 : 180,454.80 = 74,190.34 : x
  2. Step 2: Convert to fraction form
    130,768.30/180,454.80 = 74,190.34/x
  3. Step 3: Cross multiply
    130,768.30x = 180,454.80 × 74,190.34
  4. Step 4: Simplify right side
    130,768.30x = 13,388,002,966.63
  5. Step 5: Solve for x
    x = 13,388,002,966.63/130,768.30
  6. Step 6: Final answer
    x = 102,379.57

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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.