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Finding the Fourth Proportional to 104,280.76, 143,831.01 and 68,457.70

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Solution

The fourth proportional to 104,280.76, 143,831.01 and 68,457.70 is: 94,421.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,280.76 : 143,831.01 = 68,457.70 : x
  2. Step 2: Convert to fraction form
    104,280.76/143,831.01 = 68,457.70/x
  3. Step 3: Cross multiply
    104,280.76x = 143,831.01 × 68,457.70
  4. Step 4: Simplify right side
    104,280.76x = 9,846,339,071.83
  5. Step 5: Solve for x
    x = 9,846,339,071.83/104,280.76
  6. Step 6: Final answer
    x = 94,421.44

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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.