Home / 130,368.24-179,910.72-85,075.20

Finding the Fourth Proportional to 130,368.24, 179,910.72 and 85,075.20

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Solution

The fourth proportional to 130,368.24, 179,910.72 and 85,075.20 is: 117,405.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,368.24 : 179,910.72 = 85,075.20 : x
  2. Step 2: Convert to fraction form
    130,368.24/179,910.72 = 85,075.20/x
  3. Step 3: Cross multiply
    130,368.24x = 179,910.72 × 85,075.20
  4. Step 4: Simplify right side
    130,368.24x = 15,305,940,486.14
  5. Step 5: Solve for x
    x = 15,305,940,486.14/130,368.24
  6. Step 6: Final answer
    x = 117,405.44

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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.