Home / 130,830.22-180,498.46-74,208.79

Finding the Fourth Proportional to 130,830.22, 180,498.46 and 74,208.79

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Solution

The fourth proportional to 130,830.22, 180,498.46 and 74,208.79 is: 102,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,830.22 : 180,498.46 = 74,208.79 : x
  2. Step 2: Convert to fraction form
    130,830.22/180,498.46 = 74,208.79/x
  3. Step 3: Cross multiply
    130,830.22x = 180,498.46 × 74,208.79
  4. Step 4: Simplify right side
    130,830.22x = 13,394,572,313.46
  5. Step 5: Solve for x
    x = 13,394,572,313.46/130,830.22
  6. Step 6: Final answer
    x = 102,381.33

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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.