Home / 130,407.40-179,943.78-73,815.40

Finding the Fourth Proportional to 130,407.40, 179,943.78 and 73,815.40

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Solution

The fourth proportional to 130,407.40, 179,943.78 and 73,815.40 is: 101,854.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,407.40 : 179,943.78 = 73,815.40 : x
  2. Step 2: Convert to fraction form
    130,407.40/179,943.78 = 73,815.40/x
  3. Step 3: Cross multiply
    130,407.40x = 179,943.78 × 73,815.40
  4. Step 4: Simplify right side
    130,407.40x = 13,282,622,098.21
  5. Step 5: Solve for x
    x = 13,282,622,098.21/130,407.40
  6. Step 6: Final answer
    x = 101,854.82

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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.