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Finding the Fourth Proportional to 98,994.61, 136,620.45 and 55,983.16

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Solution

The fourth proportional to 98,994.61, 136,620.45 and 55,983.16 is: 77,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,994.61 : 136,620.45 = 55,983.16 : x
  2. Step 2: Convert to fraction form
    98,994.61/136,620.45 = 55,983.16/x
  3. Step 3: Cross multiply
    98,994.61x = 136,620.45 × 55,983.16
  4. Step 4: Simplify right side
    98,994.61x = 7,648,443,548.60
  5. Step 5: Solve for x
    x = 7,648,443,548.60/98,994.61
  6. Step 6: Final answer
    x = 77,261.22

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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.