Home / 153,627.21-212,006.43-85,648.50

Finding the Fourth Proportional to 153,627.21, 212,006.43 and 85,648.50

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Solution

The fourth proportional to 153,627.21, 212,006.43 and 85,648.50 is: 118,195.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,627.21 : 212,006.43 = 85,648.50 : x
  2. Step 2: Convert to fraction form
    153,627.21/212,006.43 = 85,648.50/x
  3. Step 3: Cross multiply
    153,627.21x = 212,006.43 × 85,648.50
  4. Step 4: Simplify right side
    153,627.21x = 18,158,032,719.86
  5. Step 5: Solve for x
    x = 18,158,032,719.86/153,627.21
  6. Step 6: Final answer
    x = 118,195.42

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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.