Home / 153,631.44-212,023.68-85,670.52

Finding the Fourth Proportional to 153,631.44, 212,023.68 and 85,670.52

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Solution

The fourth proportional to 153,631.44, 212,023.68 and 85,670.52 is: 118,232.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,631.44 : 212,023.68 = 85,670.52 : x
  2. Step 2: Convert to fraction form
    153,631.44/212,023.68 = 85,670.52/x
  3. Step 3: Cross multiply
    153,631.44x = 212,023.68 × 85,670.52
  4. Step 4: Simplify right side
    153,631.44x = 18,164,178,917.91
  5. Step 5: Solve for x
    x = 18,164,178,917.91/153,631.44
  6. Step 6: Final answer
    x = 118,232.17

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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.