Home / 120,058.32-180,087.56-31,311.72

Finding the Fourth Proportional to 120,058.32, 180,087.56 and 31,311.72

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Solution

The fourth proportional to 120,058.32, 180,087.56 and 31,311.72 is: 46,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,058.32 : 180,087.56 = 31,311.72 : x
  2. Step 2: Convert to fraction form
    120,058.32/180,087.56 = 31,311.72/x
  3. Step 3: Cross multiply
    120,058.32x = 180,087.56 × 31,311.72
  4. Step 4: Simplify right side
    120,058.32x = 5,638,851,254.20
  5. Step 5: Solve for x
    x = 5,638,851,254.20/120,058.32
  6. Step 6: Final answer
    x = 46,967.60

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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.