Home / 120,718.95-181,109.81-45,839.51

Finding the Fourth Proportional to 120,718.95, 181,109.81 and 45,839.51

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Solution

The fourth proportional to 120,718.95, 181,109.81 and 45,839.51 is: 68,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,718.95 : 181,109.81 = 45,839.51 : x
  2. Step 2: Convert to fraction form
    120,718.95/181,109.81 = 45,839.51/x
  3. Step 3: Cross multiply
    120,718.95x = 181,109.81 × 45,839.51
  4. Step 4: Simplify right side
    120,718.95x = 8,301,984,946.59
  5. Step 5: Solve for x
    x = 8,301,984,946.59/120,718.95
  6. Step 6: Final answer
    x = 68,771.18

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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.