Home / 130,690.06-180,324.73-85,434.65

Finding the Fourth Proportional to 130,690.06, 180,324.73 and 85,434.65

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Solution

The fourth proportional to 130,690.06, 180,324.73 and 85,434.65 is: 117,881.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,690.06 : 180,324.73 = 85,434.65 : x
  2. Step 2: Convert to fraction form
    130,690.06/180,324.73 = 85,434.65/x
  3. Step 3: Cross multiply
    130,690.06x = 180,324.73 × 85,434.65
  4. Step 4: Simplify right side
    130,690.06x = 15,405,980,075.28
  5. Step 5: Solve for x
    x = 15,405,980,075.28/130,690.06
  6. Step 6: Final answer
    x = 117,881.81

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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.