Home / 142,637.37-196,845.72-78,975.16

Finding the Fourth Proportional to 142,637.37, 196,845.72 and 78,975.16

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Solution

The fourth proportional to 142,637.37, 196,845.72 and 78,975.16 is: 108,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,637.37 : 196,845.72 = 78,975.16 : x
  2. Step 2: Convert to fraction form
    142,637.37/196,845.72 = 78,975.16/x
  3. Step 3: Cross multiply
    142,637.37x = 196,845.72 × 78,975.16
  4. Step 4: Simplify right side
    142,637.37x = 15,545,920,853.21
  5. Step 5: Solve for x
    x = 15,545,920,853.21/142,637.37
  6. Step 6: Final answer
    x = 108,989.12

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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.