Home / 130,521.36-180,055.41-85,178.37

Finding the Fourth Proportional to 130,521.36, 180,055.41 and 85,178.37

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Solution

The fourth proportional to 130,521.36, 180,055.41 and 85,178.37 is: 117,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,521.36 : 180,055.41 = 85,178.37 : x
  2. Step 2: Convert to fraction form
    130,521.36/180,055.41 = 85,178.37/x
  3. Step 3: Cross multiply
    130,521.36x = 180,055.41 × 85,178.37
  4. Step 4: Simplify right side
    130,521.36x = 15,336,826,333.48
  5. Step 5: Solve for x
    x = 15,336,826,333.48/130,521.36
  6. Step 6: Final answer
    x = 117,504.34

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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.