Home / 154,654.90-213,441.53-86,690.26

Finding the Fourth Proportional to 154,654.90, 213,441.53 and 86,690.26

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Solution

The fourth proportional to 154,654.90, 213,441.53 and 86,690.26 is: 119,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,654.90 : 213,441.53 = 86,690.26 : x
  2. Step 2: Convert to fraction form
    154,654.90/213,441.53 = 86,690.26/x
  3. Step 3: Cross multiply
    154,654.90x = 213,441.53 × 86,690.26
  4. Step 4: Simplify right side
    154,654.90x = 18,503,301,730.50
  5. Step 5: Solve for x
    x = 18,503,301,730.50/154,654.90
  6. Step 6: Final answer
    x = 119,642.52

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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.