Home / 260,111.20-390,008.40-102,150.40

Finding the Fourth Proportional to 260,111.20, 390,008.40 and 102,150.40

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Solution

The fourth proportional to 260,111.20, 390,008.40 and 102,150.40 is: 153,163.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,111.20 : 390,008.40 = 102,150.40 : x
  2. Step 2: Convert to fraction form
    260,111.20/390,008.40 = 102,150.40/x
  3. Step 3: Cross multiply
    260,111.20x = 390,008.40 × 102,150.40
  4. Step 4: Simplify right side
    260,111.20x = 39,839,514,063.36
  5. Step 5: Solve for x
    x = 39,839,514,063.36/260,111.20
  6. Step 6: Final answer
    x = 153,163.39

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1.5x scale

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.