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Finding the Fourth Proportional to 158,378.13, 218,478.96 and 97,929.45

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Solution

The fourth proportional to 158,378.13, 218,478.96 and 97,929.45 is: 135,091.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,378.13 : 218,478.96 = 97,929.45 : x
  2. Step 2: Convert to fraction form
    158,378.13/218,478.96 = 97,929.45/x
  3. Step 3: Cross multiply
    158,378.13x = 218,478.96 × 97,929.45
  4. Step 4: Simplify right side
    158,378.13x = 21,395,524,389.37
  5. Step 5: Solve for x
    x = 21,395,524,389.37/158,378.13
  6. Step 6: Final answer
    x = 135,091.41

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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.