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Finding the Fourth Proportional to 154,045.60, 212,580.52 and 86,063.51

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Solution

The fourth proportional to 154,045.60, 212,580.52 and 86,063.51 is: 118,766.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,045.60 : 212,580.52 = 86,063.51 : x
  2. Step 2: Convert to fraction form
    154,045.60/212,580.52 = 86,063.51/x
  3. Step 3: Cross multiply
    154,045.60x = 212,580.52 × 86,063.51
  4. Step 4: Simplify right side
    154,045.60x = 18,295,426,025.12
  5. Step 5: Solve for x
    x = 18,295,426,025.12/154,045.60
  6. Step 6: Final answer
    x = 118,766.30

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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.