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Finding the Fourth Proportional to 117,590.36, 162,300.36 and 72,307.30

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Solution

The fourth proportional to 117,590.36, 162,300.36 and 72,307.30 is: 99,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,590.36 : 162,300.36 = 72,307.30 : x
  2. Step 2: Convert to fraction form
    117,590.36/162,300.36 = 72,307.30/x
  3. Step 3: Cross multiply
    117,590.36x = 162,300.36 × 72,307.30
  4. Step 4: Simplify right side
    117,590.36x = 11,735,500,820.63
  5. Step 5: Solve for x
    x = 11,735,500,820.63/117,590.36
  6. Step 6: Final answer
    x = 99,799.85

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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.