Home / 129,057,208.72-178,096,705.64-70,320,356.50

Finding the Fourth Proportional to 129,057,208.72, 178,096,705.64 and 70,320,356.50

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Solution

The fourth proportional to 129,057,208.72, 178,096,705.64 and 70,320,356.50 is: 97,040,870.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,208.72 : 178,096,705.64 = 70,320,356.50 : x
  2. Step 2: Convert to fraction form
    129,057,208.72/178,096,705.64 = 70,320,356.50/x
  3. Step 3: Cross multiply
    129,057,208.72x = 178,096,705.64 × 70,320,356.50
  4. Step 4: Simplify right side
    129,057,208.72x = 12,523,823,831,189,876
  5. Step 5: Solve for x
    x = 12,523,823,831,189,876/129,057,208.72
  6. Step 6: Final answer
    x = 97,040,870.13

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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.