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Finding the Fourth Proportional to 158,024.70, 218,080.86 and 86,400.45

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Solution

The fourth proportional to 158,024.70, 218,080.86 and 86,400.45 is: 119,236.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,024.70 : 218,080.86 = 86,400.45 : x
  2. Step 2: Convert to fraction form
    158,024.70/218,080.86 = 86,400.45/x
  3. Step 3: Cross multiply
    158,024.70x = 218,080.86 × 86,400.45
  4. Step 4: Simplify right side
    158,024.70x = 18,842,284,440.39
  5. Step 5: Solve for x
    x = 18,842,284,440.39/158,024.70
  6. Step 6: Final answer
    x = 119,236.32

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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.