Home / 120,439.90-180,659.28-30,483.46

Finding the Fourth Proportional to 120,439.90, 180,659.28 and 30,483.46

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Solution

The fourth proportional to 120,439.90, 180,659.28 and 30,483.46 is: 45,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,439.90 : 180,659.28 = 30,483.46 : x
  2. Step 2: Convert to fraction form
    120,439.90/180,659.28 = 30,483.46/x
  3. Step 3: Cross multiply
    120,439.90x = 180,659.28 × 30,483.46
  4. Step 4: Simplify right side
    120,439.90x = 5,507,119,935.51
  5. Step 5: Solve for x
    x = 5,507,119,935.51/120,439.90
  6. Step 6: Final answer
    x = 45,725.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.