Home / 205,018.17-307,549.13-86,701.47

Finding the Fourth Proportional to 205,018.17, 307,549.13 and 86,701.47

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Solution

The fourth proportional to 205,018.17, 307,549.13 and 86,701.47 is: 130,061.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,018.17 : 307,549.13 = 86,701.47 : x
  2. Step 2: Convert to fraction form
    205,018.17/307,549.13 = 86,701.47/x
  3. Step 3: Cross multiply
    205,018.17x = 307,549.13 × 86,701.47
  4. Step 4: Simplify right side
    205,018.17x = 26,664,961,668.22
  5. Step 5: Solve for x
    x = 26,664,961,668.22/205,018.17
  6. Step 6: Final answer
    x = 130,061.46

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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.