Home / 145,921.69-201,371.93-78,853.69

Finding the Fourth Proportional to 145,921.69, 201,371.93 and 78,853.69

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Solution

The fourth proportional to 145,921.69, 201,371.93 and 78,853.69 is: 108,818.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,921.69 : 201,371.93 = 78,853.69 : x
  2. Step 2: Convert to fraction form
    145,921.69/201,371.93 = 78,853.69/x
  3. Step 3: Cross multiply
    145,921.69x = 201,371.93 × 78,853.69
  4. Step 4: Simplify right side
    145,921.69x = 15,878,919,140.92
  5. Step 5: Solve for x
    x = 15,878,919,140.92/145,921.69
  6. Step 6: Final answer
    x = 108,818.09

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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.