Home / 128,199.16-176,916.71-70,839.80

Finding the Fourth Proportional to 128,199.16, 176,916.71 and 70,839.80

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Solution

The fourth proportional to 128,199.16, 176,916.71 and 70,839.80 is: 97,759.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,199.16 : 176,916.71 = 70,839.80 : x
  2. Step 2: Convert to fraction form
    128,199.16/176,916.71 = 70,839.80/x
  3. Step 3: Cross multiply
    128,199.16x = 176,916.71 × 70,839.80
  4. Step 4: Simplify right side
    128,199.16x = 12,532,744,761.86
  5. Step 5: Solve for x
    x = 12,532,744,761.86/128,199.16
  6. Step 6: Final answer
    x = 97,759.96

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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.