Home / 155,406.55-214,460.73-87,423.58

Finding the Fourth Proportional to 155,406.55, 214,460.73 and 87,423.58

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Solution

The fourth proportional to 155,406.55, 214,460.73 and 87,423.58 is: 120,644.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,406.55 : 214,460.73 = 87,423.58 : x
  2. Step 2: Convert to fraction form
    155,406.55/214,460.73 = 87,423.58/x
  3. Step 3: Cross multiply
    155,406.55x = 214,460.73 × 87,423.58
  4. Step 4: Simplify right side
    155,406.55x = 18,748,924,249.86
  5. Step 5: Solve for x
    x = 18,748,924,249.86/155,406.55
  6. Step 6: Final answer
    x = 120,644.37

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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.