Home / 130,559.16-180,186.12-76,857.42

Finding the Fourth Proportional to 130,559.16, 180,186.12 and 76,857.42

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Solution

The fourth proportional to 130,559.16, 180,186.12 and 76,857.42 is: 106,071.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,559.16 : 180,186.12 = 76,857.42 : x
  2. Step 2: Convert to fraction form
    130,559.16/180,186.12 = 76,857.42/x
  3. Step 3: Cross multiply
    130,559.16x = 180,186.12 × 76,857.42
  4. Step 4: Simplify right side
    130,559.16x = 13,848,640,303.01
  5. Step 5: Solve for x
    x = 13,848,640,303.01/130,559.16
  6. Step 6: Final answer
    x = 106,071.76

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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.