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Finding the Fourth Proportional to 111,396.63, 153,703.26 and 70,572.63

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Solution

The fourth proportional to 111,396.63, 153,703.26 and 70,572.63 is: 97,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,396.63 : 153,703.26 = 70,572.63 : x
  2. Step 2: Convert to fraction form
    111,396.63/153,703.26 = 70,572.63/x
  3. Step 3: Cross multiply
    111,396.63x = 153,703.26 × 70,572.63
  4. Step 4: Simplify right side
    111,396.63x = 10,847,243,297.77
  5. Step 5: Solve for x
    x = 10,847,243,297.77/111,396.63
  6. Step 6: Final answer
    x = 97,374.97

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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.