Home / 121,011.36-181,461.51-71,114.94

Finding the Fourth Proportional to 121,011.36, 181,461.51 and 71,114.94

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Solution

The fourth proportional to 121,011.36, 181,461.51 and 71,114.94 is: 106,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.36 : 181,461.51 = 71,114.94 : x
  2. Step 2: Convert to fraction form
    121,011.36/181,461.51 = 71,114.94/x
  3. Step 3: Cross multiply
    121,011.36x = 181,461.51 × 71,114.94
  4. Step 4: Simplify right side
    121,011.36x = 12,904,624,395.96
  5. Step 5: Solve for x
    x = 12,904,624,395.96/121,011.36
  6. Step 6: Final answer
    x = 106,639.78

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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.