Home / 122,112.90-168,510.81-68,397.06

Finding the Fourth Proportional to 122,112.90, 168,510.81 and 68,397.06

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Solution

The fourth proportional to 122,112.90, 168,510.81 and 68,397.06 is: 94,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,112.90 : 168,510.81 = 68,397.06 : x
  2. Step 2: Convert to fraction form
    122,112.90/168,510.81 = 68,397.06/x
  3. Step 3: Cross multiply
    122,112.90x = 168,510.81 × 68,397.06
  4. Step 4: Simplify right side
    122,112.90x = 11,525,643,982.22
  5. Step 5: Solve for x
    x = 11,525,643,982.22/122,112.90
  6. Step 6: Final answer
    x = 94,385.15

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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.