Home / 130,137.51-179,582.31-71,990.77

Finding the Fourth Proportional to 130,137.51, 179,582.31 and 71,990.77

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Solution

The fourth proportional to 130,137.51, 179,582.31 and 71,990.77 is: 99,343.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,137.51 : 179,582.31 = 71,990.77 : x
  2. Step 2: Convert to fraction form
    130,137.51/179,582.31 = 71,990.77/x
  3. Step 3: Cross multiply
    130,137.51x = 179,582.31 × 71,990.77
  4. Step 4: Simplify right side
    130,137.51x = 12,928,268,775.28
  5. Step 5: Solve for x
    x = 12,928,268,775.28/130,137.51
  6. Step 6: Final answer
    x = 99,343.14

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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.