Home / 155,257.50-214,253.45-87,285.81

Finding the Fourth Proportional to 155,257.50, 214,253.45 and 87,285.81

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Solution

The fourth proportional to 155,257.50, 214,253.45 and 87,285.81 is: 120,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,257.50 : 214,253.45 = 87,285.81 : x
  2. Step 2: Convert to fraction form
    155,257.50/214,253.45 = 87,285.81/x
  3. Step 3: Cross multiply
    155,257.50x = 214,253.45 × 87,285.81
  4. Step 4: Simplify right side
    155,257.50x = 18,701,285,492.12
  5. Step 5: Solve for x
    x = 18,701,285,492.12/155,257.50
  6. Step 6: Final answer
    x = 120,453.35

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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.