Home / 121,211.81-181,756.85-70,627.17

Finding the Fourth Proportional to 121,211.81, 181,756.85 and 70,627.17

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Solution

The fourth proportional to 121,211.81, 181,756.85 and 70,627.17 is: 105,905.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,211.81 : 181,756.85 = 70,627.17 : x
  2. Step 2: Convert to fraction form
    121,211.81/181,756.85 = 70,627.17/x
  3. Step 3: Cross multiply
    121,211.81x = 181,756.85 × 70,627.17
  4. Step 4: Simplify right side
    121,211.81x = 12,836,972,272.07
  5. Step 5: Solve for x
    x = 12,836,972,272.07/121,211.81
  6. Step 6: Final answer
    x = 105,905.29

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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.