Home / 120,510.52-180,646.14-57,219.40

Finding the Fourth Proportional to 120,510.52, 180,646.14 and 57,219.40

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Solution

The fourth proportional to 120,510.52, 180,646.14 and 57,219.40 is: 85,772.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,510.52 : 180,646.14 = 57,219.40 : x
  2. Step 2: Convert to fraction form
    120,510.52/180,646.14 = 57,219.40/x
  3. Step 3: Cross multiply
    120,510.52x = 180,646.14 × 57,219.40
  4. Step 4: Simplify right side
    120,510.52x = 10,336,463,743.12
  5. Step 5: Solve for x
    x = 10,336,463,743.12/120,510.52
  6. Step 6: Final answer
    x = 85,772.29

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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.