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Finding the Fourth Proportional to 121,871.60, 182,807.40 and 106,319.60

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Solution

The fourth proportional to 121,871.60, 182,807.40 and 106,319.60 is: 159,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,871.60 : 182,807.40 = 106,319.60 : x
  2. Step 2: Convert to fraction form
    121,871.60/182,807.40 = 106,319.60/x
  3. Step 3: Cross multiply
    121,871.60x = 182,807.40 × 106,319.60
  4. Step 4: Simplify right side
    121,871.60x = 19,436,009,645.04
  5. Step 5: Solve for x
    x = 19,436,009,645.04/121,871.60
  6. Step 6: Final answer
    x = 159,479.40

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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.