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Finding the Fourth Proportional to 130,012, 179,416.56 and 70,396

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Solution

The fourth proportional to 130,012, 179,416.56 and 70,396 is: 97,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,012 : 179,416.56 = 70,396 : x
  2. Step 2: Convert to fraction form
    130,012/179,416.56 = 70,396/x
  3. Step 3: Cross multiply
    130,012x = 179,416.56 × 70,396
  4. Step 4: Simplify right side
    130,012x = 12,630,208,157.76
  5. Step 5: Solve for x
    x = 12,630,208,157.76/130,012
  6. Step 6: Final answer
    x = 97,146.48

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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.