Home / 120,438.90-180,657.78-30,482.46

Finding the Fourth Proportional to 120,438.90, 180,657.78 and 30,482.46

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Solution

The fourth proportional to 120,438.90, 180,657.78 and 30,482.46 is: 45,723.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,438.90 : 180,657.78 = 30,482.46 : x
  2. Step 2: Convert to fraction form
    120,438.90/180,657.78 = 30,482.46/x
  3. Step 3: Cross multiply
    120,438.90x = 180,657.78 × 30,482.46
  4. Step 4: Simplify right side
    120,438.90x = 5,506,893,438.23
  5. Step 5: Solve for x
    x = 5,506,893,438.23/120,438.90
  6. Step 6: Final answer
    x = 45,723.54

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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.