Home / 142,602.90-196,792.06-78,076.32

Finding the Fourth Proportional to 142,602.90, 196,792.06 and 78,076.32

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Solution

The fourth proportional to 142,602.90, 196,792.06 and 78,076.32 is: 107,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,602.90 : 196,792.06 = 78,076.32 : x
  2. Step 2: Convert to fraction form
    142,602.90/196,792.06 = 78,076.32/x
  3. Step 3: Cross multiply
    142,602.90x = 196,792.06 × 78,076.32
  4. Step 4: Simplify right side
    142,602.90x = 15,364,798,475.68
  5. Step 5: Solve for x
    x = 15,364,798,475.68/142,602.90
  6. Step 6: Final answer
    x = 107,745.35

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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.