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Finding the Fourth Proportional to 155,409.52, 214,477.58 and 87,422.44

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Solution

The fourth proportional to 155,409.52, 214,477.58 and 87,422.44 is: 120,649.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,409.52 : 214,477.58 = 87,422.44 : x
  2. Step 2: Convert to fraction form
    155,409.52/214,477.58 = 87,422.44/x
  3. Step 3: Cross multiply
    155,409.52x = 214,477.58 × 87,422.44
  4. Step 4: Simplify right side
    155,409.52x = 18,750,152,296.51
  5. Step 5: Solve for x
    x = 18,750,152,296.51/155,409.52
  6. Step 6: Final answer
    x = 120,649.96

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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.