Home / 155,280.78-214,295.08-87,319.16

Finding the Fourth Proportional to 155,280.78, 214,295.08 and 87,319.16

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Solution

The fourth proportional to 155,280.78, 214,295.08 and 87,319.16 is: 120,504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,280.78 : 214,295.08 = 87,319.16 : x
  2. Step 2: Convert to fraction form
    155,280.78/214,295.08 = 87,319.16/x
  3. Step 3: Cross multiply
    155,280.78x = 214,295.08 × 87,319.16
  4. Step 4: Simplify right side
    155,280.78x = 18,712,066,377.73
  5. Step 5: Solve for x
    x = 18,712,066,377.73/155,280.78
  6. Step 6: Final answer
    x = 120,504.72

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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.