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Finding the Fourth Proportional to 108,117.84, 149,186.97 and 65,668.17

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Solution

The fourth proportional to 108,117.84, 149,186.97 and 65,668.17 is: 90,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,117.84 : 149,186.97 = 65,668.17 : x
  2. Step 2: Convert to fraction form
    108,117.84/149,186.97 = 65,668.17/x
  3. Step 3: Cross multiply
    108,117.84x = 149,186.97 × 65,668.17
  4. Step 4: Simplify right side
    108,117.84x = 9,796,835,307.74
  5. Step 5: Solve for x
    x = 9,796,835,307.74/108,117.84
  6. Step 6: Final answer
    x = 90,612.57

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1.5x scale

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.