Home / 111,985.17-154,539.55-61,684.17

Finding the Fourth Proportional to 111,985.17, 154,539.55 and 61,684.17

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Solution

The fourth proportional to 111,985.17, 154,539.55 and 61,684.17 is: 85,124.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,985.17 : 154,539.55 = 61,684.17 : x
  2. Step 2: Convert to fraction form
    111,985.17/154,539.55 = 61,684.17/x
  3. Step 3: Cross multiply
    111,985.17x = 154,539.55 × 61,684.17
  4. Step 4: Simplify right side
    111,985.17x = 9,532,643,893.82
  5. Step 5: Solve for x
    x = 9,532,643,893.82/111,985.17
  6. Step 6: Final answer
    x = 85,124.16

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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.