Home / 142,631.34-196,842.36-78,975.06

Finding the Fourth Proportional to 142,631.34, 196,842.36 and 78,975.06

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Solution

The fourth proportional to 142,631.34, 196,842.36 and 78,975.06 is: 108,991.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,631.34 : 196,842.36 = 78,975.06 : x
  2. Step 2: Convert to fraction form
    142,631.34/196,842.36 = 78,975.06/x
  3. Step 3: Cross multiply
    142,631.34x = 196,842.36 × 78,975.06
  4. Step 4: Simplify right side
    142,631.34x = 15,545,637,191.54
  5. Step 5: Solve for x
    x = 15,545,637,191.54/142,631.34
  6. Step 6: Final answer
    x = 108,991.73

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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.