Home / 127,342.58-175,685.06-78,922.40

Finding the Fourth Proportional to 127,342.58, 175,685.06 and 78,922.40

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Solution

The fourth proportional to 127,342.58, 175,685.06 and 78,922.40 is: 108,883.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,342.58 : 175,685.06 = 78,922.40 : x
  2. Step 2: Convert to fraction form
    127,342.58/175,685.06 = 78,922.40/x
  3. Step 3: Cross multiply
    127,342.58x = 175,685.06 × 78,922.40
  4. Step 4: Simplify right side
    127,342.58x = 13,865,486,579.34
  5. Step 5: Solve for x
    x = 13,865,486,579.34/127,342.58
  6. Step 6: Final answer
    x = 108,883.35

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1.5x scale

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.