Home / 105,515.48-145,610.45-57,117.17

Finding the Fourth Proportional to 105,515.48, 145,610.45 and 57,117.17

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Solution

The fourth proportional to 105,515.48, 145,610.45 and 57,117.17 is: 78,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,515.48 : 145,610.45 = 57,117.17 : x
  2. Step 2: Convert to fraction form
    105,515.48/145,610.45 = 57,117.17/x
  3. Step 3: Cross multiply
    105,515.48x = 145,610.45 × 57,117.17
  4. Step 4: Simplify right side
    105,515.48x = 8,316,856,098.37
  5. Step 5: Solve for x
    x = 8,316,856,098.37/105,515.48
  6. Step 6: Final answer
    x = 78,821.20

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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.