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Finding the Fourth Proportional to 120,868.70, 181,303.05 and 93,220.70

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Solution

The fourth proportional to 120,868.70, 181,303.05 and 93,220.70 is: 139,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,868.70 : 181,303.05 = 93,220.70 : x
  2. Step 2: Convert to fraction form
    120,868.70/181,303.05 = 93,220.70/x
  3. Step 3: Cross multiply
    120,868.70x = 181,303.05 × 93,220.70
  4. Step 4: Simplify right side
    120,868.70x = 16,901,197,233.14
  5. Step 5: Solve for x
    x = 16,901,197,233.14/120,868.70
  6. Step 6: Final answer
    x = 139,831.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.