Home / 155,372.27-214,420.11-87,392.40

Finding the Fourth Proportional to 155,372.27, 214,420.11 and 87,392.40

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Solution

The fourth proportional to 155,372.27, 214,420.11 and 87,392.40 is: 120,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,372.27 : 214,420.11 = 87,392.40 : x
  2. Step 2: Convert to fraction form
    155,372.27/214,420.11 = 87,392.40/x
  3. Step 3: Cross multiply
    155,372.27x = 214,420.11 × 87,392.40
  4. Step 4: Simplify right side
    155,372.27x = 18,738,688,021.16
  5. Step 5: Solve for x
    x = 18,738,688,021.16/155,372.27
  6. Step 6: Final answer
    x = 120,605.10

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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.