Home / 153,756.42-212,162.64-85,765.44

Finding the Fourth Proportional to 153,756.42, 212,162.64 and 85,765.44

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Solution

The fourth proportional to 153,756.42, 212,162.64 and 85,765.44 is: 118,344.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,756.42 : 212,162.64 = 85,765.44 : x
  2. Step 2: Convert to fraction form
    153,756.42/212,162.64 = 85,765.44/x
  3. Step 3: Cross multiply
    153,756.42x = 212,162.64 × 85,765.44
  4. Step 4: Simplify right side
    153,756.42x = 18,196,222,171.16
  5. Step 5: Solve for x
    x = 18,196,222,171.16/153,756.42
  6. Step 6: Final answer
    x = 118,344.47

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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.