Home / 127,817.20-191,725.80-90,492.40

Finding the Fourth Proportional to 127,817.20, 191,725.80 and 90,492.40

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Solution

The fourth proportional to 127,817.20, 191,725.80 and 90,492.40 is: 135,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,817.20 : 191,725.80 = 90,492.40 : x
  2. Step 2: Convert to fraction form
    127,817.20/191,725.80 = 90,492.40/x
  3. Step 3: Cross multiply
    127,817.20x = 191,725.80 × 90,492.40
  4. Step 4: Simplify right side
    127,817.20x = 17,349,727,783.92
  5. Step 5: Solve for x
    x = 17,349,727,783.92/127,817.20
  6. Step 6: Final answer
    x = 135,738.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.