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Finding the Fourth Proportional to 155,282.54, 214,297.50 and 87,320.90

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Solution

The fourth proportional to 155,282.54, 214,297.50 and 87,320.90 is: 120,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,282.54 : 214,297.50 = 87,320.90 : x
  2. Step 2: Convert to fraction form
    155,282.54/214,297.50 = 87,320.90/x
  3. Step 3: Cross multiply
    155,282.54x = 214,297.50 × 87,320.90
  4. Step 4: Simplify right side
    155,282.54x = 18,712,650,939.77
  5. Step 5: Solve for x
    x = 18,712,650,939.77/155,282.54
  6. Step 6: Final answer
    x = 120,507.12

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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.