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Finding the Fourth Proportional to 106,596.77, 159,995.62 and 78,430.95

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Solution

The fourth proportional to 106,596.77, 159,995.62 and 78,430.95 is: 117,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,596.77 : 159,995.62 = 78,430.95 : x
  2. Step 2: Convert to fraction form
    106,596.77/159,995.62 = 78,430.95/x
  3. Step 3: Cross multiply
    106,596.77x = 159,995.62 × 78,430.95
  4. Step 4: Simplify right side
    106,596.77x = 12,548,607,672.46
  5. Step 5: Solve for x
    x = 12,548,607,672.46/106,596.77
  6. Step 6: Final answer
    x = 117,720.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.