Home / 127,103.78-175,403.40-70,515.20

Finding the Fourth Proportional to 127,103.78, 175,403.40 and 70,515.20

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Solution

The fourth proportional to 127,103.78, 175,403.40 and 70,515.20 is: 97,311.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,103.78 : 175,403.40 = 70,515.20 : x
  2. Step 2: Convert to fraction form
    127,103.78/175,403.40 = 70,515.20/x
  3. Step 3: Cross multiply
    127,103.78x = 175,403.40 × 70,515.20
  4. Step 4: Simplify right side
    127,103.78x = 12,368,605,831.68
  5. Step 5: Solve for x
    x = 12,368,605,831.68/127,103.78
  6. Step 6: Final answer
    x = 97,311.08

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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.