Home / 142,783.44-197,036.19-79,127.16

Finding the Fourth Proportional to 142,783.44, 197,036.19 and 79,127.16

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Solution

The fourth proportional to 142,783.44, 197,036.19 and 79,127.16 is: 109,192.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,783.44 : 197,036.19 = 79,127.16 : x
  2. Step 2: Convert to fraction form
    142,783.44/197,036.19 = 79,127.16/x
  3. Step 3: Cross multiply
    142,783.44x = 197,036.19 × 79,127.16
  4. Step 4: Simplify right side
    142,783.44x = 15,590,914,131.92
  5. Step 5: Solve for x
    x = 15,590,914,131.92/142,783.44
  6. Step 6: Final answer
    x = 109,192.73

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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.