Home / 127,129.08-190,695.14-38,386.50

Finding the Fourth Proportional to 127,129.08, 190,695.14 and 38,386.50

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Solution

The fourth proportional to 127,129.08, 190,695.14 and 38,386.50 is: 57,580.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,129.08 : 190,695.14 = 38,386.50 : x
  2. Step 2: Convert to fraction form
    127,129.08/190,695.14 = 38,386.50/x
  3. Step 3: Cross multiply
    127,129.08x = 190,695.14 × 38,386.50
  4. Step 4: Simplify right side
    127,129.08x = 7,320,118,991.61
  5. Step 5: Solve for x
    x = 7,320,118,991.61/127,129.08
  6. Step 6: Final answer
    x = 57,580.21

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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.