Home / 155,280.39-214,285.65-87,297.66

Finding the Fourth Proportional to 155,280.39, 214,285.65 and 87,297.66

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Solution

The fourth proportional to 155,280.39, 214,285.65 and 87,297.66 is: 120,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,280.39 : 214,285.65 = 87,297.66 : x
  2. Step 2: Convert to fraction form
    155,280.39/214,285.65 = 87,297.66/x
  3. Step 3: Cross multiply
    155,280.39x = 214,285.65 × 87,297.66
  4. Step 4: Simplify right side
    155,280.39x = 18,706,636,292.78
  5. Step 5: Solve for x
    x = 18,706,636,292.78/155,280.39
  6. Step 6: Final answer
    x = 120,470.05

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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.