Home / 130,752.78-180,438.75-74,164.02

Finding the Fourth Proportional to 130,752.78, 180,438.75 and 74,164.02

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Solution

The fourth proportional to 130,752.78, 180,438.75 and 74,164.02 is: 102,346.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,752.78 : 180,438.75 = 74,164.02 : x
  2. Step 2: Convert to fraction form
    130,752.78/180,438.75 = 74,164.02/x
  3. Step 3: Cross multiply
    130,752.78x = 180,438.75 × 74,164.02
  4. Step 4: Simplify right side
    130,752.78x = 13,382,063,063.78
  5. Step 5: Solve for x
    x = 13,382,063,063.78/130,752.78
  6. Step 6: Final answer
    x = 102,346.30

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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.