Home / 98,721.06-136,238.19-54,009.06

Finding the Fourth Proportional to 98,721.06, 136,238.19 and 54,009.06

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Solution

The fourth proportional to 98,721.06, 136,238.19 and 54,009.06 is: 74,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,721.06 : 136,238.19 = 54,009.06 : x
  2. Step 2: Convert to fraction form
    98,721.06/136,238.19 = 54,009.06/x
  3. Step 3: Cross multiply
    98,721.06x = 136,238.19 × 54,009.06
  4. Step 4: Simplify right side
    98,721.06x = 7,358,096,578.00
  5. Step 5: Solve for x
    x = 7,358,096,578.00/98,721.06
  6. Step 6: Final answer
    x = 74,534.21

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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.