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Finding the Fourth Proportional to 153,165.68, 211,147.06 and 101,396.04

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Solution

The fourth proportional to 153,165.68, 211,147.06 and 101,396.04 is: 139,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,165.68 : 211,147.06 = 101,396.04 : x
  2. Step 2: Convert to fraction form
    153,165.68/211,147.06 = 101,396.04/x
  3. Step 3: Cross multiply
    153,165.68x = 211,147.06 × 101,396.04
  4. Step 4: Simplify right side
    153,165.68x = 21,409,475,741.64
  5. Step 5: Solve for x
    x = 21,409,475,741.64/153,165.68
  6. Step 6: Final answer
    x = 139,779.85

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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.