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Finding the Fourth Proportional to 117,881.64, 162,636.48 and 66,888.72

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Solution

The fourth proportional to 117,881.64, 162,636.48 and 66,888.72 is: 92,283.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,881.64 : 162,636.48 = 66,888.72 : x
  2. Step 2: Convert to fraction form
    117,881.64/162,636.48 = 66,888.72/x
  3. Step 3: Cross multiply
    117,881.64x = 162,636.48 × 66,888.72
  4. Step 4: Simplify right side
    117,881.64x = 10,878,545,972.51
  5. Step 5: Solve for x
    x = 10,878,545,972.51/117,881.64
  6. Step 6: Final answer
    x = 92,283.63

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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.