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Finding the Fourth Proportional to 97,220.20, 145,830.30 and 81,668.20

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Solution

The fourth proportional to 97,220.20, 145,830.30 and 81,668.20 is: 122,502.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,220.20 : 145,830.30 = 81,668.20 : x
  2. Step 2: Convert to fraction form
    97,220.20/145,830.30 = 81,668.20/x
  3. Step 3: Cross multiply
    97,220.20x = 145,830.30 × 81,668.20
  4. Step 4: Simplify right side
    97,220.20x = 11,909,698,106.46
  5. Step 5: Solve for x
    x = 11,909,698,106.46/97,220.20
  6. Step 6: Final answer
    x = 122,502.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.