Home / 129,052.89-178,088.76-72,464.67

Finding the Fourth Proportional to 129,052.89, 178,088.76 and 72,464.67

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Solution

The fourth proportional to 129,052.89, 178,088.76 and 72,464.67 is: 99,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,052.89 : 178,088.76 = 72,464.67 : x
  2. Step 2: Convert to fraction form
    129,052.89/178,088.76 = 72,464.67/x
  3. Step 3: Cross multiply
    129,052.89x = 178,088.76 × 72,464.67
  4. Step 4: Simplify right side
    129,052.89x = 12,905,143,224.11
  5. Step 5: Solve for x
    x = 12,905,143,224.11/129,052.89
  6. Step 6: Final answer
    x = 99,998.87

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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.