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Finding the Fourth Proportional to 152,021.95, 209,788.88 and 84,040.67

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Solution

The fourth proportional to 152,021.95, 209,788.88 and 84,040.67 is: 115,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,021.95 : 209,788.88 = 84,040.67 : x
  2. Step 2: Convert to fraction form
    152,021.95/209,788.88 = 84,040.67/x
  3. Step 3: Cross multiply
    152,021.95x = 209,788.88 × 84,040.67
  4. Step 4: Simplify right side
    152,021.95x = 17,630,798,138.02
  5. Step 5: Solve for x
    x = 17,630,798,138.02/152,021.95
  6. Step 6: Final answer
    x = 115,975.35

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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.