Home / 154,817.28-213,636.96-86,829.12

Finding the Fourth Proportional to 154,817.28, 213,636.96 and 86,829.12

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Solution

The fourth proportional to 154,817.28, 213,636.96 and 86,829.12 is: 119,818.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,817.28 : 213,636.96 = 86,829.12 : x
  2. Step 2: Convert to fraction form
    154,817.28/213,636.96 = 86,829.12/x
  3. Step 3: Cross multiply
    154,817.28x = 213,636.96 × 86,829.12
  4. Step 4: Simplify right side
    154,817.28x = 18,549,909,236.28
  5. Step 5: Solve for x
    x = 18,549,909,236.28/154,817.28
  6. Step 6: Final answer
    x = 119,818.08

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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.