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Finding the Fourth Proportional to 111,307.32, 153,623.84 and 84,404.48

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Solution

The fourth proportional to 111,307.32, 153,623.84 and 84,404.48 is: 116,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,307.32 : 153,623.84 = 84,404.48 : x
  2. Step 2: Convert to fraction form
    111,307.32/153,623.84 = 84,404.48/x
  3. Step 3: Cross multiply
    111,307.32x = 153,623.84 × 84,404.48
  4. Step 4: Simplify right side
    111,307.32x = 12,966,539,140.66
  5. Step 5: Solve for x
    x = 12,966,539,140.66/111,307.32
  6. Step 6: Final answer
    x = 116,493.14

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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.