Home / 99,678.99-137,556.90-54,357.06

Finding the Fourth Proportional to 99,678.99, 137,556.90 and 54,357.06

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Solution

The fourth proportional to 99,678.99, 137,556.90 and 54,357.06 is: 75,012.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,678.99 : 137,556.90 = 54,357.06 : x
  2. Step 2: Convert to fraction form
    99,678.99/137,556.90 = 54,357.06/x
  3. Step 3: Cross multiply
    99,678.99x = 137,556.90 × 54,357.06
  4. Step 4: Simplify right side
    99,678.99x = 7,477,188,666.71
  5. Step 5: Solve for x
    x = 7,477,188,666.71/99,678.99
  6. Step 6: Final answer
    x = 75,012.68

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1.5x scale

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.