Home / 137,582.57-189,868.10-77,158.80

Finding the Fourth Proportional to 137,582.57, 189,868.10 and 77,158.80

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Solution

The fourth proportional to 137,582.57, 189,868.10 and 77,158.80 is: 106,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,582.57 : 189,868.10 = 77,158.80 : x
  2. Step 2: Convert to fraction form
    137,582.57/189,868.10 = 77,158.80/x
  3. Step 3: Cross multiply
    137,582.57x = 189,868.10 × 77,158.80
  4. Step 4: Simplify right side
    137,582.57x = 14,649,994,368.49
  5. Step 5: Solve for x
    x = 14,649,994,368.49/137,582.57
  6. Step 6: Final answer
    x = 106,481.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.