Home / 155,276.35-214,288.96-87,314.72

Finding the Fourth Proportional to 155,276.35, 214,288.96 and 87,314.72

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Solution

The fourth proportional to 155,276.35, 214,288.96 and 87,314.72 is: 120,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,276.35 : 214,288.96 = 87,314.72 : x
  2. Step 2: Convert to fraction form
    155,276.35/214,288.96 = 87,314.72/x
  3. Step 3: Cross multiply
    155,276.35x = 214,288.96 × 87,314.72
  4. Step 4: Simplify right side
    155,276.35x = 18,710,579,579.19
  5. Step 5: Solve for x
    x = 18,710,579,579.19/155,276.35
  6. Step 6: Final answer
    x = 120,498.58

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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.