Home / 115,276.50-159,212.79-77,485.14

Finding the Fourth Proportional to 115,276.50, 159,212.79 and 77,485.14

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Solution

The fourth proportional to 115,276.50, 159,212.79 and 77,485.14 is: 107,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,276.50 : 159,212.79 = 77,485.14 : x
  2. Step 2: Convert to fraction form
    115,276.50/159,212.79 = 77,485.14/x
  3. Step 3: Cross multiply
    115,276.50x = 159,212.79 × 77,485.14
  4. Step 4: Simplify right side
    115,276.50x = 12,336,625,322.94
  5. Step 5: Solve for x
    x = 12,336,625,322.94/115,276.50
  6. Step 6: Final answer
    x = 107,017.70

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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.