Home / 154,089.54-212,643.12-86,106.58

Finding the Fourth Proportional to 154,089.54, 212,643.12 and 86,106.58

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Solution

The fourth proportional to 154,089.54, 212,643.12 and 86,106.58 is: 118,826.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,089.54 : 212,643.12 = 86,106.58 : x
  2. Step 2: Convert to fraction form
    154,089.54/212,643.12 = 86,106.58/x
  3. Step 3: Cross multiply
    154,089.54x = 212,643.12 × 86,106.58
  4. Step 4: Simplify right side
    154,089.54x = 18,309,971,615.02
  5. Step 5: Solve for x
    x = 18,309,971,615.02/154,089.54
  6. Step 6: Final answer
    x = 118,826.83

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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.