Home / 106,579.32-147,084.84-70,708.20

Finding the Fourth Proportional to 106,579.32, 147,084.84 and 70,708.20

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Solution

The fourth proportional to 106,579.32, 147,084.84 and 70,708.20 is: 97,580.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,579.32 : 147,084.84 = 70,708.20 : x
  2. Step 2: Convert to fraction form
    106,579.32/147,084.84 = 70,708.20/x
  3. Step 3: Cross multiply
    106,579.32x = 147,084.84 × 70,708.20
  4. Step 4: Simplify right side
    106,579.32x = 10,400,104,283.69
  5. Step 5: Solve for x
    x = 10,400,104,283.69/106,579.32
  6. Step 6: Final answer
    x = 97,580.88

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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.