Home / 157,788.18-217,739.52-86,154.36

Finding the Fourth Proportional to 157,788.18, 217,739.52 and 86,154.36

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Solution

The fourth proportional to 157,788.18, 217,739.52 and 86,154.36 is: 118,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,788.18 : 217,739.52 = 86,154.36 : x
  2. Step 2: Convert to fraction form
    157,788.18/217,739.52 = 86,154.36/x
  3. Step 3: Cross multiply
    157,788.18x = 217,739.52 × 86,154.36
  4. Step 4: Simplify right side
    157,788.18x = 18,759,208,992.31
  5. Step 5: Solve for x
    x = 18,759,208,992.31/157,788.18
  6. Step 6: Final answer
    x = 118,888.56

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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.