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Finding the Fourth Proportional to 130,354.64, 179,889.39 and 70,738.64

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Solution

The fourth proportional to 130,354.64, 179,889.39 and 70,738.64 is: 97,619.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,354.64 : 179,889.39 = 70,738.64 : x
  2. Step 2: Convert to fraction form
    130,354.64/179,889.39 = 70,738.64/x
  3. Step 3: Cross multiply
    130,354.64x = 179,889.39 × 70,738.64
  4. Step 4: Simplify right side
    130,354.64x = 12,725,130,799.03
  5. Step 5: Solve for x
    x = 12,725,130,799.03/130,354.64
  6. Step 6: Final answer
    x = 97,619.32

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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.