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Finding the Fourth Proportional to 154,326.76, 212,875.58 and 105,906.58

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Solution

The fourth proportional to 154,326.76, 212,875.58 and 105,906.58 is: 146,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,326.76 : 212,875.58 = 105,906.58 : x
  2. Step 2: Convert to fraction form
    154,326.76/212,875.58 = 105,906.58/x
  3. Step 3: Cross multiply
    154,326.76x = 212,875.58 × 105,906.58
  4. Step 4: Simplify right side
    154,326.76x = 22,544,924,643.32
  5. Step 5: Solve for x
    x = 22,544,924,643.32/154,326.76
  6. Step 6: Final answer
    x = 146,085.65

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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.