Home / 129,542,138.66-178,767,717.17-70,804,769.78

Finding the Fourth Proportional to 129,542,138.66, 178,767,717.17 and 70,804,769.78

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Solution

The fourth proportional to 129,542,138.66, 178,767,717.17 and 70,804,769.78 is: 97,710,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,542,138.66 : 178,767,717.17 = 70,804,769.78 : x
  2. Step 2: Convert to fraction form
    129,542,138.66/178,767,717.17 = 70,804,769.78/x
  3. Step 3: Cross multiply
    129,542,138.66x = 178,767,717.17 × 70,804,769.78
  4. Step 4: Simplify right side
    129,542,138.66x = 12,657,607,057,963,978
  5. Step 5: Solve for x
    x = 12,657,607,057,963,978/129,542,138.66
  6. Step 6: Final answer
    x = 97,710,344.98

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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.