Home / 153,158.42-211,358.74-85,173.90

Finding the Fourth Proportional to 153,158.42, 211,358.74 and 85,173.90

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Solution

The fourth proportional to 153,158.42, 211,358.74 and 85,173.90 is: 117,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,158.42 : 211,358.74 = 85,173.90 : x
  2. Step 2: Convert to fraction form
    153,158.42/211,358.74 = 85,173.90/x
  3. Step 3: Cross multiply
    153,158.42x = 211,358.74 × 85,173.90
  4. Step 4: Simplify right side
    153,158.42x = 18,002,248,184.89
  5. Step 5: Solve for x
    x = 18,002,248,184.89/153,158.42
  6. Step 6: Final answer
    x = 117,540.05

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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.