Home / 130,622.64-180,297.55-85,307.47

Finding the Fourth Proportional to 130,622.64, 180,297.55 and 85,307.47

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Solution

The fourth proportional to 130,622.64, 180,297.55 and 85,307.47 is: 117,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,622.64 : 180,297.55 = 85,307.47 : x
  2. Step 2: Convert to fraction form
    130,622.64/180,297.55 = 85,307.47/x
  3. Step 3: Cross multiply
    130,622.64x = 180,297.55 × 85,307.47
  4. Step 4: Simplify right side
    130,622.64x = 15,380,726,936.21
  5. Step 5: Solve for x
    x = 15,380,726,936.21/130,622.64
  6. Step 6: Final answer
    x = 117,749.32

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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.