Home / 134,981.80-202,655.10-78,879.40

Finding the Fourth Proportional to 134,981.80, 202,655.10 and 78,879.40

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Solution

The fourth proportional to 134,981.80, 202,655.10 and 78,879.40 is: 118,425.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,981.80 : 202,655.10 = 78,879.40 : x
  2. Step 2: Convert to fraction form
    134,981.80/202,655.10 = 78,879.40/x
  3. Step 3: Cross multiply
    134,981.80x = 202,655.10 × 78,879.40
  4. Step 4: Simplify right side
    134,981.80x = 15,985,312,694.94
  5. Step 5: Solve for x
    x = 15,985,312,694.94/134,981.80
  6. Step 6: Final answer
    x = 118,425.69

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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.