Home / 131,242.08-181,079.28-74,644.32

Finding the Fourth Proportional to 131,242.08, 181,079.28 and 74,644.32

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Solution

The fourth proportional to 131,242.08, 181,079.28 and 74,644.32 is: 102,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,242.08 : 181,079.28 = 74,644.32 : x
  2. Step 2: Convert to fraction form
    131,242.08/181,079.28 = 74,644.32/x
  3. Step 3: Cross multiply
    131,242.08x = 181,079.28 × 74,644.32
  4. Step 4: Simplify right side
    131,242.08x = 13,516,539,721.69
  5. Step 5: Solve for x
    x = 13,516,539,721.69/131,242.08
  6. Step 6: Final answer
    x = 102,989.37

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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.