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Finding the Fourth Proportional to 130,130, 179,579.40 and 70,514

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Solution

The fourth proportional to 130,130, 179,579.40 and 70,514 is: 97,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,130 : 179,579.40 = 70,514 : x
  2. Step 2: Convert to fraction form
    130,130/179,579.40 = 70,514/x
  3. Step 3: Cross multiply
    130,130x = 179,579.40 × 70,514
  4. Step 4: Simplify right side
    130,130x = 12,662,861,811.60
  5. Step 5: Solve for x
    x = 12,662,861,811.60/130,130
  6. Step 6: Final answer
    x = 97,309.32

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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.