Home / 105,107.76-145,021.59-62,636.22

Finding the Fourth Proportional to 105,107.76, 145,021.59 and 62,636.22

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Solution

The fourth proportional to 105,107.76, 145,021.59 and 62,636.22 is: 86,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,107.76 : 145,021.59 = 62,636.22 : x
  2. Step 2: Convert to fraction form
    105,107.76/145,021.59 = 62,636.22/x
  3. Step 3: Cross multiply
    105,107.76x = 145,021.59 × 62,636.22
  4. Step 4: Simplify right side
    105,107.76x = 9,083,604,215.99
  5. Step 5: Solve for x
    x = 9,083,604,215.99/105,107.76
  6. Step 6: Final answer
    x = 86,421.82

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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.