Home / 130,025.49-179,315.07-99,812.09

Finding the Fourth Proportional to 130,025.49, 179,315.07 and 99,812.09

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Solution

The fourth proportional to 130,025.49, 179,315.07 and 99,812.09 is: 137,648.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,025.49 : 179,315.07 = 99,812.09 : x
  2. Step 2: Convert to fraction form
    130,025.49/179,315.07 = 99,812.09/x
  3. Step 3: Cross multiply
    130,025.49x = 179,315.07 × 99,812.09
  4. Step 4: Simplify right side
    130,025.49x = 17,897,811,008.62
  5. Step 5: Solve for x
    x = 17,897,811,008.62/130,025.49
  6. Step 6: Final answer
    x = 137,648.48

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1.5x scale

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.