Home / 127,133.88-175,438.64-76,148.76

Finding the Fourth Proportional to 127,133.88, 175,438.64 and 76,148.76

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Solution

The fourth proportional to 127,133.88, 175,438.64 and 76,148.76 is: 105,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,133.88 : 175,438.64 = 76,148.76 : x
  2. Step 2: Convert to fraction form
    127,133.88/175,438.64 = 76,148.76/x
  3. Step 3: Cross multiply
    127,133.88x = 175,438.64 × 76,148.76
  4. Step 4: Simplify right side
    127,133.88x = 13,359,435,740.35
  5. Step 5: Solve for x
    x = 13,359,435,740.35/127,133.88
  6. Step 6: Final answer
    x = 105,081.64

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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.