Home / 120,688.38-181,041.45-31,941.28

Finding the Fourth Proportional to 120,688.38, 181,041.45 and 31,941.28

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Solution

The fourth proportional to 120,688.38, 181,041.45 and 31,941.28 is: 47,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,688.38 : 181,041.45 = 31,941.28 : x
  2. Step 2: Convert to fraction form
    120,688.38/181,041.45 = 31,941.28/x
  3. Step 3: Cross multiply
    120,688.38x = 181,041.45 × 31,941.28
  4. Step 4: Simplify right side
    120,688.38x = 5,782,695,646.06
  5. Step 5: Solve for x
    x = 5,782,695,646.06/120,688.38
  6. Step 6: Final answer
    x = 47,914.27

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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.