Home / 106,619.61-147,015.12-87,177.87

Finding the Fourth Proportional to 106,619.61, 147,015.12 and 87,177.87

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Solution

The fourth proportional to 106,619.61, 147,015.12 and 87,177.87 is: 120,207.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,619.61 : 147,015.12 = 87,177.87 : x
  2. Step 2: Convert to fraction form
    106,619.61/147,015.12 = 87,177.87/x
  3. Step 3: Cross multiply
    106,619.61x = 147,015.12 × 87,177.87
  4. Step 4: Simplify right side
    106,619.61x = 12,816,464,583.51
  5. Step 5: Solve for x
    x = 12,816,464,583.51/106,619.61
  6. Step 6: Final answer
    x = 120,207.38

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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.