Home / 155,342.77-214,370.98-87,359.72

Finding the Fourth Proportional to 155,342.77, 214,370.98 and 87,359.72

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Solution

The fourth proportional to 155,342.77, 214,370.98 and 87,359.72 is: 120,555.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,342.77 : 214,370.98 = 87,359.72 : x
  2. Step 2: Convert to fraction form
    155,342.77/214,370.98 = 87,359.72/x
  3. Step 3: Cross multiply
    155,342.77x = 214,370.98 × 87,359.72
  4. Step 4: Simplify right side
    155,342.77x = 18,727,389,106.45
  5. Step 5: Solve for x
    x = 18,727,389,106.45/155,342.77
  6. Step 6: Final answer
    x = 120,555.27

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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.