Home / 138,029,800.80-207,074,094.48-40,985,787.36

Finding the Fourth Proportional to 138,029,800.80, 207,074,094.48 and 40,985,787.36

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Solution

The fourth proportional to 138,029,800.80, 207,074,094.48 and 40,985,787.36 is: 61,487,408.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,029,800.80 : 207,074,094.48 = 40,985,787.36 : x
  2. Step 2: Convert to fraction form
    138,029,800.80/207,074,094.48 = 40,985,787.36/x
  3. Step 3: Cross multiply
    138,029,800.80x = 207,074,094.48 × 40,985,787.36
  4. Step 4: Simplify right side
    138,029,800.80x = 8,487,094,804,121,829
  5. Step 5: Solve for x
    x = 8,487,094,804,121,829/138,029,800.80
  6. Step 6: Final answer
    x = 61,487,408.91

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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.