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Finding the Fourth Proportional to 157,048.62, 216,611.06 and 99,638.52

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Solution

The fourth proportional to 157,048.62, 216,611.06 and 99,638.52 is: 137,427.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,048.62 : 216,611.06 = 99,638.52 : x
  2. Step 2: Convert to fraction form
    157,048.62/216,611.06 = 99,638.52/x
  3. Step 3: Cross multiply
    157,048.62x = 216,611.06 × 99,638.52
  4. Step 4: Simplify right side
    157,048.62x = 21,582,804,935.84
  5. Step 5: Solve for x
    x = 21,582,804,935.84/157,048.62
  6. Step 6: Final answer
    x = 137,427.54

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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.