Home / 127,667.20-191,500.80-83,430.40

Finding the Fourth Proportional to 127,667.20, 191,500.80 and 83,430.40

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Solution

The fourth proportional to 127,667.20, 191,500.80 and 83,430.40 is: 125,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,667.20 : 191,500.80 = 83,430.40 : x
  2. Step 2: Convert to fraction form
    127,667.20/191,500.80 = 83,430.40/x
  3. Step 3: Cross multiply
    127,667.20x = 191,500.80 × 83,430.40
  4. Step 4: Simplify right side
    127,667.20x = 15,976,988,344.32
  5. Step 5: Solve for x
    x = 15,976,988,344.32/127,667.20
  6. Step 6: Final answer
    x = 125,145.60

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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.