Home / 137,980.60-190,410.96-76,724.35

Finding the Fourth Proportional to 137,980.60, 190,410.96 and 76,724.35

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Solution

The fourth proportional to 137,980.60, 190,410.96 and 76,724.35 is: 105,878.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,980.60 : 190,410.96 = 76,724.35 : x
  2. Step 2: Convert to fraction form
    137,980.60/190,410.96 = 76,724.35/x
  3. Step 3: Cross multiply
    137,980.60x = 190,410.96 × 76,724.35
  4. Step 4: Simplify right side
    137,980.60x = 14,609,157,138.88
  5. Step 5: Solve for x
    x = 14,609,157,138.88/137,980.60
  6. Step 6: Final answer
    x = 105,878.34

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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.