Home / 102,007.76-140,777.16-57,298.64

Finding the Fourth Proportional to 102,007.76, 140,777.16 and 57,298.64

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Solution

The fourth proportional to 102,007.76, 140,777.16 and 57,298.64 is: 79,075.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,007.76 : 140,777.16 = 57,298.64 : x
  2. Step 2: Convert to fraction form
    102,007.76/140,777.16 = 57,298.64/x
  3. Step 3: Cross multiply
    102,007.76x = 140,777.16 × 57,298.64
  4. Step 4: Simplify right side
    102,007.76x = 8,066,339,811.06
  5. Step 5: Solve for x
    x = 8,066,339,811.06/102,007.76
  6. Step 6: Final answer
    x = 79,075.75

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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.