Home / 133,218.48-183,835.80-72,788.16

Finding the Fourth Proportional to 133,218.48, 183,835.80 and 72,788.16

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Solution

The fourth proportional to 133,218.48, 183,835.80 and 72,788.16 is: 100,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,218.48 : 183,835.80 = 72,788.16 : x
  2. Step 2: Convert to fraction form
    133,218.48/183,835.80 = 72,788.16/x
  3. Step 3: Cross multiply
    133,218.48x = 183,835.80 × 72,788.16
  4. Step 4: Simplify right side
    133,218.48x = 13,381,069,624.13
  5. Step 5: Solve for x
    x = 13,381,069,624.13/133,218.48
  6. Step 6: Final answer
    x = 100,444.55

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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.