Home / 137,943,748.72-190,291,133.22-85,712,939.92

Finding the Fourth Proportional to 137,943,748.72, 190,291,133.22 and 85,712,939.92

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Solution

The fourth proportional to 137,943,748.72, 190,291,133.22 and 85,712,939.92 is: 118,239,591.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,943,748.72 : 190,291,133.22 = 85,712,939.92 : x
  2. Step 2: Convert to fraction form
    137,943,748.72/190,291,133.22 = 85,712,939.92/x
  3. Step 3: Cross multiply
    137,943,748.72x = 190,291,133.22 × 85,712,939.92
  4. Step 4: Simplify right side
    137,943,748.72x = 16,310,412,468,994,576
  5. Step 5: Solve for x
    x = 16,310,412,468,994,576/137,943,748.72
  6. Step 6: Final answer
    x = 118,239,591.29

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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.