Home / 130,114.64-195,287.16-66,979.28

Finding the Fourth Proportional to 130,114.64, 195,287.16 and 66,979.28

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Solution

The fourth proportional to 130,114.64, 195,287.16 and 66,979.28 is: 100,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,114.64 : 195,287.16 = 66,979.28 : x
  2. Step 2: Convert to fraction form
    130,114.64/195,287.16 = 66,979.28/x
  3. Step 3: Cross multiply
    130,114.64x = 195,287.16 × 66,979.28
  4. Step 4: Simplify right side
    130,114.64x = 13,080,193,370.04
  5. Step 5: Solve for x
    x = 13,080,193,370.04/130,114.64
  6. Step 6: Final answer
    x = 100,528.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.