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Finding the Fourth Proportional to 101,440.83, 139,972.28 and 65,632.35

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Solution

The fourth proportional to 101,440.83, 139,972.28 and 65,632.35 is: 90,562.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,440.83 : 139,972.28 = 65,632.35 : x
  2. Step 2: Convert to fraction form
    101,440.83/139,972.28 = 65,632.35/x
  3. Step 3: Cross multiply
    101,440.83x = 139,972.28 × 65,632.35
  4. Step 4: Simplify right side
    101,440.83x = 9,186,709,343.10
  5. Step 5: Solve for x
    x = 9,186,709,343.10/101,440.83
  6. Step 6: Final answer
    x = 90,562.25

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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.