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Finding the Fourth Proportional to 154,248.60, 212,861.56 and 86,264.80

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Solution

The fourth proportional to 154,248.60, 212,861.56 and 86,264.80 is: 119,044.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,248.60 : 212,861.56 = 86,264.80 : x
  2. Step 2: Convert to fraction form
    154,248.60/212,861.56 = 86,264.80/x
  3. Step 3: Cross multiply
    154,248.60x = 212,861.56 × 86,264.80
  4. Step 4: Simplify right side
    154,248.60x = 18,362,459,901.09
  5. Step 5: Solve for x
    x = 18,362,459,901.09/154,248.60
  6. Step 6: Final answer
    x = 119,044.58

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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.