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Finding the Fourth Proportional to 207,100.83, 310,716.45 and 73,978.14

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Solution

The fourth proportional to 207,100.83, 310,716.45 and 73,978.14 is: 110,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,100.83 : 310,716.45 = 73,978.14 : x
  2. Step 2: Convert to fraction form
    207,100.83/310,716.45 = 73,978.14/x
  3. Step 3: Cross multiply
    207,100.83x = 310,716.45 × 73,978.14
  4. Step 4: Simplify right side
    207,100.83x = 22,986,225,038.40
  5. Step 5: Solve for x
    x = 22,986,225,038.40/207,100.83
  6. Step 6: Final answer
    x = 110,990.50

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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.