Home / 129,045,099.66-178,148,052.72-87,448,913.70

Finding the Fourth Proportional to 129,045,099.66, 178,148,052.72 and 87,448,913.70

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Solution

The fourth proportional to 129,045,099.66, 178,148,052.72 and 87,448,913.70 is: 120,724,101.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,045,099.66 : 178,148,052.72 = 87,448,913.70 : x
  2. Step 2: Convert to fraction form
    129,045,099.66/178,148,052.72 = 87,448,913.70/x
  3. Step 3: Cross multiply
    129,045,099.66x = 178,148,052.72 × 87,448,913.70
  4. Step 4: Simplify right side
    129,045,099.66x = 15,578,853,688,134,330
  5. Step 5: Solve for x
    x = 15,578,853,688,134,330/129,045,099.66
  6. Step 6: Final answer
    x = 120,724,101.33

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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.