Home / 127,438.36-175,913.70-84,981.40

Finding the Fourth Proportional to 127,438.36, 175,913.70 and 84,981.40

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Solution

The fourth proportional to 127,438.36, 175,913.70 and 84,981.40 is: 117,306.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,438.36 : 175,913.70 = 84,981.40 : x
  2. Step 2: Convert to fraction form
    127,438.36/175,913.70 = 84,981.40/x
  3. Step 3: Cross multiply
    127,438.36x = 175,913.70 × 84,981.40
  4. Step 4: Simplify right side
    127,438.36x = 14,949,392,505.18
  5. Step 5: Solve for x
    x = 14,949,392,505.18/127,438.36
  6. Step 6: Final answer
    x = 117,306.85

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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.