Home / 127,259.90-190,889.85-103,640.30

Finding the Fourth Proportional to 127,259.90, 190,889.85 and 103,640.30

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Solution

The fourth proportional to 127,259.90, 190,889.85 and 103,640.30 is: 155,460.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,259.90 : 190,889.85 = 103,640.30 : x
  2. Step 2: Convert to fraction form
    127,259.90/190,889.85 = 103,640.30/x
  3. Step 3: Cross multiply
    127,259.90x = 190,889.85 × 103,640.30
  4. Step 4: Simplify right side
    127,259.90x = 19,783,881,320.96
  5. Step 5: Solve for x
    x = 19,783,881,320.96/127,259.90
  6. Step 6: Final answer
    x = 155,460.45

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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.