Home / 155,678.38-214,823.40-87,673.62

Finding the Fourth Proportional to 155,678.38, 214,823.40 and 87,673.62

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Solution

The fourth proportional to 155,678.38, 214,823.40 and 87,673.62 is: 120,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,678.38 : 214,823.40 = 87,673.62 : x
  2. Step 2: Convert to fraction form
    155,678.38/214,823.40 = 87,673.62/x
  3. Step 3: Cross multiply
    155,678.38x = 214,823.40 × 87,673.62
  4. Step 4: Simplify right side
    155,678.38x = 18,834,345,138.71
  5. Step 5: Solve for x
    x = 18,834,345,138.71/155,678.38
  6. Step 6: Final answer
    x = 120,982.41

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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.