Home / 86,917.25-130,155.34-72,840.26

Finding the Fourth Proportional to 86,917.25, 130,155.34 and 72,840.26

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Solution

The fourth proportional to 86,917.25, 130,155.34 and 72,840.26 is: 109,075.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,917.25 : 130,155.34 = 72,840.26 : x
  2. Step 2: Convert to fraction form
    86,917.25/130,155.34 = 72,840.26/x
  3. Step 3: Cross multiply
    86,917.25x = 130,155.34 × 72,840.26
  4. Step 4: Simplify right side
    86,917.25x = 9,480,548,805.99
  5. Step 5: Solve for x
    x = 9,480,548,805.99/86,917.25
  6. Step 6: Final answer
    x = 109,075.57

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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.