Home / 133,208.48-183,822-72,778.16

Finding the Fourth Proportional to 133,208.48, 183,822 and 72,778.16

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Solution

The fourth proportional to 133,208.48, 183,822 and 72,778.16 is: 100,430.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,208.48 : 183,822 = 72,778.16 : x
  2. Step 2: Convert to fraction form
    133,208.48/183,822 = 72,778.16/x
  3. Step 3: Cross multiply
    133,208.48x = 183,822 × 72,778.16
  4. Step 4: Simplify right side
    133,208.48x = 13,378,226,927.52
  5. Step 5: Solve for x
    x = 13,378,226,927.52/133,208.48
  6. Step 6: Final answer
    x = 100,430.75

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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.