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Finding the Fourth Proportional to 129,625.04, 178,881 and 73,046

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Solution

The fourth proportional to 129,625.04, 178,881 and 73,046 is: 100,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,625.04 : 178,881 = 73,046 : x
  2. Step 2: Convert to fraction form
    129,625.04/178,881 = 73,046/x
  3. Step 3: Cross multiply
    129,625.04x = 178,881 × 73,046
  4. Step 4: Simplify right side
    129,625.04x = 13,066,541,526
  5. Step 5: Solve for x
    x = 13,066,541,526/129,625.04
  6. Step 6: Final answer
    x = 100,802.60

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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.