Home / 127,389.07-191,111.09-38,649.72

Finding the Fourth Proportional to 127,389.07, 191,111.09 and 38,649.72

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Solution

The fourth proportional to 127,389.07, 191,111.09 and 38,649.72 is: 57,982.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,389.07 : 191,111.09 = 38,649.72 : x
  2. Step 2: Convert to fraction form
    127,389.07/191,111.09 = 38,649.72/x
  3. Step 3: Cross multiply
    127,389.07x = 191,111.09 × 38,649.72
  4. Step 4: Simplify right side
    127,389.07x = 7,386,390,117.39
  5. Step 5: Solve for x
    x = 7,386,390,117.39/127,389.07
  6. Step 6: Final answer
    x = 57,982.92

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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.