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Finding the Fourth Proportional to 153,636.73, 212,031.32 and 84,739.69

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Solution

The fourth proportional to 153,636.73, 212,031.32 and 84,739.69 is: 116,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,636.73 : 212,031.32 = 84,739.69 : x
  2. Step 2: Convert to fraction form
    153,636.73/212,031.32 = 84,739.69/x
  3. Step 3: Cross multiply
    153,636.73x = 212,031.32 × 84,739.69
  4. Step 4: Simplify right side
    153,636.73x = 17,967,467,903.39
  5. Step 5: Solve for x
    x = 17,967,467,903.39/153,636.73
  6. Step 6: Final answer
    x = 116,947.74

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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.