Home / 187,978.79-259,427.13-103,112.25

Finding the Fourth Proportional to 187,978.79, 259,427.13 and 103,112.25

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Solution

The fourth proportional to 187,978.79, 259,427.13 and 103,112.25 is: 142,303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,978.79 : 259,427.13 = 103,112.25 : x
  2. Step 2: Convert to fraction form
    187,978.79/259,427.13 = 103,112.25/x
  3. Step 3: Cross multiply
    187,978.79x = 259,427.13 × 103,112.25
  4. Step 4: Simplify right side
    187,978.79x = 26,750,115,085.34
  5. Step 5: Solve for x
    x = 26,750,115,085.34/187,978.79
  6. Step 6: Final answer
    x = 142,303.90

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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.