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Finding the Fourth Proportional to 124,412.80, 171,688.80 and 70,693.60

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Solution

The fourth proportional to 124,412.80, 171,688.80 and 70,693.60 is: 97,556.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,412.80 : 171,688.80 = 70,693.60 : x
  2. Step 2: Convert to fraction form
    124,412.80/171,688.80 = 70,693.60/x
  3. Step 3: Cross multiply
    124,412.80x = 171,688.80 × 70,693.60
  4. Step 4: Simplify right side
    124,412.80x = 12,137,299,351.68
  5. Step 5: Solve for x
    x = 12,137,299,351.68/124,412.80
  6. Step 6: Final answer
    x = 97,556.68

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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.