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Finding the Fourth Proportional to 101,071.22, 139,450.29 and 65,262.74

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Solution

The fourth proportional to 101,071.22, 139,450.29 and 65,262.74 is: 90,044.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,071.22 : 139,450.29 = 65,262.74 : x
  2. Step 2: Convert to fraction form
    101,071.22/139,450.29 = 65,262.74/x
  3. Step 3: Cross multiply
    101,071.22x = 139,450.29 × 65,262.74
  4. Step 4: Simplify right side
    101,071.22x = 9,100,908,019.19
  5. Step 5: Solve for x
    x = 9,100,908,019.19/101,071.22
  6. Step 6: Final answer
    x = 90,044.51

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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.