Home / 145,979.93-201,452.60-78,911.93

Finding the Fourth Proportional to 145,979.93, 201,452.60 and 78,911.93

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Solution

The fourth proportional to 145,979.93, 201,452.60 and 78,911.93 is: 108,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,979.93 : 201,452.60 = 78,911.93 : x
  2. Step 2: Convert to fraction form
    145,979.93/201,452.60 = 78,911.93/x
  3. Step 3: Cross multiply
    145,979.93x = 201,452.60 × 78,911.93
  4. Step 4: Simplify right side
    145,979.93x = 15,897,013,469.52
  5. Step 5: Solve for x
    x = 15,897,013,469.52/145,979.93
  6. Step 6: Final answer
    x = 108,898.62

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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.