Home / 127,729.28-191,613.36-37,780.40

Finding the Fourth Proportional to 127,729.28, 191,613.36 and 37,780.40

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Solution

The fourth proportional to 127,729.28, 191,613.36 and 37,780.40 is: 56,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,729.28 : 191,613.36 = 37,780.40 : x
  2. Step 2: Convert to fraction form
    127,729.28/191,613.36 = 37,780.40/x
  3. Step 3: Cross multiply
    127,729.28x = 191,613.36 × 37,780.40
  4. Step 4: Simplify right side
    127,729.28x = 7,239,229,386.14
  5. Step 5: Solve for x
    x = 7,239,229,386.14/127,729.28
  6. Step 6: Final answer
    x = 56,676.35

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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.