Home / 207,021.80-285,607.14-130,515.72

Finding the Fourth Proportional to 207,021.80, 285,607.14 and 130,515.72

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Solution

The fourth proportional to 207,021.80, 285,607.14 and 130,515.72 is: 180,059.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,021.80 : 285,607.14 = 130,515.72 : x
  2. Step 2: Convert to fraction form
    207,021.80/285,607.14 = 130,515.72/x
  3. Step 3: Cross multiply
    207,021.80x = 285,607.14 × 130,515.72
  4. Step 4: Simplify right side
    207,021.80x = 37,276,221,514.24
  5. Step 5: Solve for x
    x = 37,276,221,514.24/207,021.80
  6. Step 6: Final answer
    x = 180,059.40

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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.