Home / 155,890.85-214,985.90-102,156.35

Finding the Fourth Proportional to 155,890.85, 214,985.90 and 102,156.35

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Solution

The fourth proportional to 155,890.85, 214,985.90 and 102,156.35 is: 140,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,890.85 : 214,985.90 = 102,156.35 : x
  2. Step 2: Convert to fraction form
    155,890.85/214,985.90 = 102,156.35/x
  3. Step 3: Cross multiply
    155,890.85x = 214,985.90 × 102,156.35
  4. Step 4: Simplify right side
    155,890.85x = 21,962,173,770.54
  5. Step 5: Solve for x
    x = 21,962,173,770.54/155,890.85
  6. Step 6: Final answer
    x = 140,881.74

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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.