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Finding the Fourth Proportional to 111,498.40, 153,860.88 and 61,197.04

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Solution

The fourth proportional to 111,498.40, 153,860.88 and 61,197.04 is: 84,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,498.40 : 153,860.88 = 61,197.04 : x
  2. Step 2: Convert to fraction form
    111,498.40/153,860.88 = 61,197.04/x
  3. Step 3: Cross multiply
    111,498.40x = 153,860.88 × 61,197.04
  4. Step 4: Simplify right side
    111,498.40x = 9,415,830,427.80
  5. Step 5: Solve for x
    x = 9,415,830,427.80/111,498.40
  6. Step 6: Final answer
    x = 84,448.12

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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.