Home / 120,314.55-180,409.53-64,139.58

Finding the Fourth Proportional to 120,314.55, 180,409.53 and 64,139.58

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Solution

The fourth proportional to 120,314.55, 180,409.53 and 64,139.58 is: 96,176.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,314.55 : 180,409.53 = 64,139.58 : x
  2. Step 2: Convert to fraction form
    120,314.55/180,409.53 = 64,139.58/x
  3. Step 3: Cross multiply
    120,314.55x = 180,409.53 × 64,139.58
  4. Step 4: Simplify right side
    120,314.55x = 11,571,390,580.15
  5. Step 5: Solve for x
    x = 11,571,390,580.15/120,314.55
  6. Step 6: Final answer
    x = 96,176.15

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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.