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Finding the Fourth Proportional to 153,604.83, 212,014.76 and 100,036.83

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Solution

The fourth proportional to 153,604.83, 212,014.76 and 100,036.83 is: 138,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,604.83 : 212,014.76 = 100,036.83 : x
  2. Step 2: Convert to fraction form
    153,604.83/212,014.76 = 100,036.83/x
  3. Step 3: Cross multiply
    153,604.83x = 212,014.76 × 100,036.83
  4. Step 4: Simplify right side
    153,604.83x = 21,209,284,003.43
  5. Step 5: Solve for x
    x = 21,209,284,003.43/153,604.83
  6. Step 6: Final answer
    x = 138,076.93

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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.