Home / 155,284.83-214,288.10-87,304.68

Finding the Fourth Proportional to 155,284.83, 214,288.10 and 87,304.68

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Solution

The fourth proportional to 155,284.83, 214,288.10 and 87,304.68 is: 120,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,284.83 : 214,288.10 = 87,304.68 : x
  2. Step 2: Convert to fraction form
    155,284.83/214,288.10 = 87,304.68/x
  3. Step 3: Cross multiply
    155,284.83x = 214,288.10 × 87,304.68
  4. Step 4: Simplify right side
    155,284.83x = 18,708,352,490.34
  5. Step 5: Solve for x
    x = 18,708,352,490.34/155,284.83
  6. Step 6: Final answer
    x = 120,477.66

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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.