Home / 139,829.40-192,968.40-76,171.32

Finding the Fourth Proportional to 139,829.40, 192,968.40 and 76,171.32

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Solution

The fourth proportional to 139,829.40, 192,968.40 and 76,171.32 is: 105,118.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,829.40 : 192,968.40 = 76,171.32 : x
  2. Step 2: Convert to fraction form
    139,829.40/192,968.40 = 76,171.32/x
  3. Step 3: Cross multiply
    139,829.40x = 192,968.40 × 76,171.32
  4. Step 4: Simplify right side
    139,829.40x = 14,698,657,746.29
  5. Step 5: Solve for x
    x = 14,698,657,746.29/139,829.40
  6. Step 6: Final answer
    x = 105,118.51

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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.