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Finding the Fourth Proportional to 99,661,393.80, 149,492,090.70 and 55,897,227.45

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Solution

The fourth proportional to 99,661,393.80, 149,492,090.70 and 55,897,227.45 is: 83,845,841.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661,393.80 : 149,492,090.70 = 55,897,227.45 : x
  2. Step 2: Convert to fraction form
    99,661,393.80/149,492,090.70 = 55,897,227.45/x
  3. Step 3: Cross multiply
    99,661,393.80x = 149,492,090.70 × 55,897,227.45
  4. Step 4: Simplify right side
    99,661,393.80x = 8,356,193,395,833,929
  5. Step 5: Solve for x
    x = 8,356,193,395,833,929/99,661,393.80
  6. Step 6: Final answer
    x = 83,845,841.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.