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Finding the Fourth Proportional to 160,482.85, 221,469.78 and 87,888.79

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Solution

The fourth proportional to 160,482.85, 221,469.78 and 87,888.79 is: 121,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,482.85 : 221,469.78 = 87,888.79 : x
  2. Step 2: Convert to fraction form
    160,482.85/221,469.78 = 87,888.79/x
  3. Step 3: Cross multiply
    160,482.85x = 221,469.78 × 87,888.79
  4. Step 4: Simplify right side
    160,482.85x = 19,464,710,985.77
  5. Step 5: Solve for x
    x = 19,464,710,985.77/160,482.85
  6. Step 6: Final answer
    x = 121,288.42

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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.