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Finding the Fourth Proportional to 122,812.40, 169,487.16 and 69,094.64

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Solution

The fourth proportional to 122,812.40, 169,487.16 and 69,094.64 is: 95,354.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,812.40 : 169,487.16 = 69,094.64 : x
  2. Step 2: Convert to fraction form
    122,812.40/169,487.16 = 69,094.64/x
  3. Step 3: Cross multiply
    122,812.40x = 169,487.16 × 69,094.64
  4. Step 4: Simplify right side
    122,812.40x = 11,710,654,304.82
  5. Step 5: Solve for x
    x = 11,710,654,304.82/122,812.40
  6. Step 6: Final answer
    x = 95,354.01

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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.