Home / 133,145.19-183,739.39-72,715.86

Finding the Fourth Proportional to 133,145.19, 183,739.39 and 72,715.86

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Solution

The fourth proportional to 133,145.19, 183,739.39 and 72,715.86 is: 100,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,145.19 : 183,739.39 = 72,715.86 : x
  2. Step 2: Convert to fraction form
    133,145.19/183,739.39 = 72,715.86/x
  3. Step 3: Cross multiply
    133,145.19x = 183,739.39 × 72,715.86
  4. Step 4: Simplify right side
    133,145.19x = 13,360,767,577.94
  5. Step 5: Solve for x
    x = 13,360,767,577.94/133,145.19
  6. Step 6: Final answer
    x = 100,347.35

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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.