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Finding the Fourth Proportional to 153,602.16, 211,945.20 and 85,604.20

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Solution

The fourth proportional to 153,602.16, 211,945.20 and 85,604.20 is: 118,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,602.16 : 211,945.20 = 85,604.20 : x
  2. Step 2: Convert to fraction form
    153,602.16/211,945.20 = 85,604.20/x
  3. Step 3: Cross multiply
    153,602.16x = 211,945.20 × 85,604.20
  4. Step 4: Simplify right side
    153,602.16x = 18,143,399,289.84
  5. Step 5: Solve for x
    x = 18,143,399,289.84/153,602.16
  6. Step 6: Final answer
    x = 118,119.43

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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.