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Finding the Fourth Proportional to 129,830.45, 179,166.54 and 70,214.45

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Solution

The fourth proportional to 129,830.45, 179,166.54 and 70,214.45 is: 96,896.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,830.45 : 179,166.54 = 70,214.45 : x
  2. Step 2: Convert to fraction form
    129,830.45/179,166.54 = 70,214.45/x
  3. Step 3: Cross multiply
    129,830.45x = 179,166.54 × 70,214.45
  4. Step 4: Simplify right side
    129,830.45x = 12,580,079,168.67
  5. Step 5: Solve for x
    x = 12,580,079,168.67/129,830.45
  6. Step 6: Final answer
    x = 96,896.22

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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.