Home / 154,749.58-213,563.18-86,788.25

Finding the Fourth Proportional to 154,749.58, 213,563.18 and 86,788.25

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Solution

The fourth proportional to 154,749.58, 213,563.18 and 86,788.25 is: 119,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,749.58 : 213,563.18 = 86,788.25 : x
  2. Step 2: Convert to fraction form
    154,749.58/213,563.18 = 86,788.25/x
  3. Step 3: Cross multiply
    154,749.58x = 213,563.18 × 86,788.25
  4. Step 4: Simplify right side
    154,749.58x = 18,534,774,656.64
  5. Step 5: Solve for x
    x = 18,534,774,656.64/154,749.58
  6. Step 6: Final answer
    x = 119,772.70

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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.