Home / 120,315.05-180,410.28-64,140.08

Finding the Fourth Proportional to 120,315.05, 180,410.28 and 64,140.08

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Solution

The fourth proportional to 120,315.05, 180,410.28 and 64,140.08 is: 96,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,315.05 : 180,410.28 = 64,140.08 : x
  2. Step 2: Convert to fraction form
    120,315.05/180,410.28 = 64,140.08/x
  3. Step 3: Cross multiply
    120,315.05x = 180,410.28 × 64,140.08
  4. Step 4: Simplify right side
    120,315.05x = 11,571,528,889.97
  5. Step 5: Solve for x
    x = 11,571,528,889.97/120,315.05
  6. Step 6: Final answer
    x = 96,176.90

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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.