Home / 120,029.90-180,071.64-45,150.66

Finding the Fourth Proportional to 120,029.90, 180,071.64 and 45,150.66

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Solution

The fourth proportional to 120,029.90, 180,071.64 and 45,150.66 is: 67,736.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,029.90 : 180,071.64 = 45,150.66 : x
  2. Step 2: Convert to fraction form
    120,029.90/180,071.64 = 45,150.66/x
  3. Step 3: Cross multiply
    120,029.90x = 180,071.64 × 45,150.66
  4. Step 4: Simplify right side
    120,029.90x = 8,130,353,393.28
  5. Step 5: Solve for x
    x = 8,130,353,393.28/120,029.90
  6. Step 6: Final answer
    x = 67,736.07

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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.