Home / 130,009.08-179,239.05-103,240.20

Finding the Fourth Proportional to 130,009.08, 179,239.05 and 103,240.20

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Solution

The fourth proportional to 130,009.08, 179,239.05 and 103,240.20 is: 142,333.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,009.08 : 179,239.05 = 103,240.20 : x
  2. Step 2: Convert to fraction form
    130,009.08/179,239.05 = 103,240.20/x
  3. Step 3: Cross multiply
    130,009.08x = 179,239.05 × 103,240.20
  4. Step 4: Simplify right side
    130,009.08x = 18,504,675,369.81
  5. Step 5: Solve for x
    x = 18,504,675,369.81/130,009.08
  6. Step 6: Final answer
    x = 142,333.72

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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.