Home / 130,628.34-180,255.56-72,486.54

Finding the Fourth Proportional to 130,628.34, 180,255.56 and 72,486.54

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Solution

The fourth proportional to 130,628.34, 180,255.56 and 72,486.54 is: 100,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,628.34 : 180,255.56 = 72,486.54 : x
  2. Step 2: Convert to fraction form
    130,628.34/180,255.56 = 72,486.54/x
  3. Step 3: Cross multiply
    130,628.34x = 180,255.56 × 72,486.54
  4. Step 4: Simplify right side
    130,628.34x = 13,066,101,860.16
  5. Step 5: Solve for x
    x = 13,066,101,860.16/130,628.34
  6. Step 6: Final answer
    x = 100,025.02

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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.