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Finding the Fourth Proportional to 158,490.07, 218,738.70 and 98,080.16

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Solution

The fourth proportional to 158,490.07, 218,738.70 and 98,080.16 is: 135,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,490.07 : 218,738.70 = 98,080.16 : x
  2. Step 2: Convert to fraction form
    158,490.07/218,738.70 = 98,080.16/x
  3. Step 3: Cross multiply
    158,490.07x = 218,738.70 × 98,080.16
  4. Step 4: Simplify right side
    158,490.07x = 21,453,925,600.50
  5. Step 5: Solve for x
    x = 21,453,925,600.50/158,490.07
  6. Step 6: Final answer
    x = 135,364.48

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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.