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Finding the Fourth Proportional to 97,212.80, 145,527.60 and 91,445.60

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Solution

The fourth proportional to 97,212.80, 145,527.60 and 91,445.60 is: 136,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,212.80 : 145,527.60 = 91,445.60 : x
  2. Step 2: Convert to fraction form
    97,212.80/145,527.60 = 91,445.60/x
  3. Step 3: Cross multiply
    97,212.80x = 145,527.60 × 91,445.60
  4. Step 4: Simplify right side
    97,212.80x = 13,307,858,698.56
  5. Step 5: Solve for x
    x = 13,307,858,698.56/97,212.80
  6. Step 6: Final answer
    x = 136,894.10

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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.