Home / 130,177.72-179,588.10-99,909.64

Finding the Fourth Proportional to 130,177.72, 179,588.10 and 99,909.64

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Solution

The fourth proportional to 130,177.72, 179,588.10 and 99,909.64 is: 137,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,177.72 : 179,588.10 = 99,909.64 : x
  2. Step 2: Convert to fraction form
    130,177.72/179,588.10 = 99,909.64/x
  3. Step 3: Cross multiply
    130,177.72x = 179,588.10 × 99,909.64
  4. Step 4: Simplify right side
    130,177.72x = 17,942,582,419.28
  5. Step 5: Solve for x
    x = 17,942,582,419.28/130,177.72
  6. Step 6: Final answer
    x = 137,831.44

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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.