Home / 133,131.99-183,720.93-72,702.45

Finding the Fourth Proportional to 133,131.99, 183,720.93 and 72,702.45

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Solution

The fourth proportional to 133,131.99, 183,720.93 and 72,702.45 is: 100,328.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,131.99 : 183,720.93 = 72,702.45 : x
  2. Step 2: Convert to fraction form
    133,131.99/183,720.93 = 72,702.45/x
  3. Step 3: Cross multiply
    133,131.99x = 183,720.93 × 72,702.45
  4. Step 4: Simplify right side
    133,131.99x = 13,356,961,727.28
  5. Step 5: Solve for x
    x = 13,356,961,727.28/133,131.99
  6. Step 6: Final answer
    x = 100,328.72

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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.