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Finding the Fourth Proportional to 130,354.69, 179,889.47 and 70,738.69

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Solution

The fourth proportional to 130,354.69, 179,889.47 and 70,738.69 is: 97,619.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,354.69 : 179,889.47 = 70,738.69 : x
  2. Step 2: Convert to fraction form
    130,354.69/179,889.47 = 70,738.69/x
  3. Step 3: Cross multiply
    130,354.69x = 179,889.47 × 70,738.69
  4. Step 4: Simplify right side
    130,354.69x = 12,725,145,452.59
  5. Step 5: Solve for x
    x = 12,725,145,452.59/130,354.69
  6. Step 6: Final answer
    x = 97,619.39

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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.