Home / 130,931.04-180,676.80-77,218.32

Finding the Fourth Proportional to 130,931.04, 180,676.80 and 77,218.32

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Solution

The fourth proportional to 130,931.04, 180,676.80 and 77,218.32 is: 106,556.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,931.04 : 180,676.80 = 77,218.32 : x
  2. Step 2: Convert to fraction form
    130,931.04/180,676.80 = 77,218.32/x
  3. Step 3: Cross multiply
    130,931.04x = 180,676.80 × 77,218.32
  4. Step 4: Simplify right side
    130,931.04x = 13,951,558,958.98
  5. Step 5: Solve for x
    x = 13,951,558,958.98/130,931.04
  6. Step 6: Final answer
    x = 106,556.54

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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.