Home / 207,120,553.60-310,431,998.40-85,889,603.20

Finding the Fourth Proportional to 207,120,553.60, 310,431,998.40 and 85,889,603.20

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Solution

The fourth proportional to 207,120,553.60, 310,431,998.40 and 85,889,603.20 is: 128,731,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,120,553.60 : 310,431,998.40 = 85,889,603.20 : x
  2. Step 2: Convert to fraction form
    207,120,553.60/310,431,998.40 = 85,889,603.20/x
  3. Step 3: Cross multiply
    207,120,553.60x = 310,431,998.40 × 85,889,603.20
  4. Step 4: Simplify right side
    207,120,553.60x = 26,662,881,163,159,032
  5. Step 5: Solve for x
    x = 26,662,881,163,159,032/207,120,553.60
  6. Step 6: Final answer
    x = 128,731,218.12

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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.