Home / 155,424.40-214,483.30-87,441.35

Finding the Fourth Proportional to 155,424.40, 214,483.30 and 87,441.35

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Solution

The fourth proportional to 155,424.40, 214,483.30 and 87,441.35 is: 120,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,424.40 : 214,483.30 = 87,441.35 : x
  2. Step 2: Convert to fraction form
    155,424.40/214,483.30 = 87,441.35/x
  3. Step 3: Cross multiply
    155,424.40x = 214,483.30 × 87,441.35
  4. Step 4: Simplify right side
    155,424.40x = 18,754,708,013.44
  5. Step 5: Solve for x
    x = 18,754,708,013.44/155,424.40
  6. Step 6: Final answer
    x = 120,667.72

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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.