Home / 138,219.96-190,741.40-76,965.72

Finding the Fourth Proportional to 138,219.96, 190,741.40 and 76,965.72

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Solution

The fourth proportional to 138,219.96, 190,741.40 and 76,965.72 is: 106,211.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219.96 : 190,741.40 = 76,965.72 : x
  2. Step 2: Convert to fraction form
    138,219.96/190,741.40 = 76,965.72/x
  3. Step 3: Cross multiply
    138,219.96x = 190,741.40 × 76,965.72
  4. Step 4: Simplify right side
    138,219.96x = 14,680,549,184.81
  5. Step 5: Solve for x
    x = 14,680,549,184.81/138,219.96
  6. Step 6: Final answer
    x = 106,211.50

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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.