Home / 100,967.41-139,323.75-57,935.45

Finding the Fourth Proportional to 100,967.41, 139,323.75 and 57,935.45

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Solution

The fourth proportional to 100,967.41, 139,323.75 and 57,935.45 is: 79,944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,967.41 : 139,323.75 = 57,935.45 : x
  2. Step 2: Convert to fraction form
    100,967.41/139,323.75 = 57,935.45/x
  3. Step 3: Cross multiply
    100,967.41x = 139,323.75 × 57,935.45
  4. Step 4: Simplify right side
    100,967.41x = 8,071,784,282.99
  5. Step 5: Solve for x
    x = 8,071,784,282.99/100,967.41
  6. Step 6: Final answer
    x = 79,944.45

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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.