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Finding the Fourth Proportional to 154,302.98, 212,928.06 and 86,308.16

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Solution

The fourth proportional to 154,302.98, 212,928.06 and 86,308.16 is: 119,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,302.98 : 212,928.06 = 86,308.16 : x
  2. Step 2: Convert to fraction form
    154,302.98/212,928.06 = 86,308.16/x
  3. Step 3: Cross multiply
    154,302.98x = 212,928.06 × 86,308.16
  4. Step 4: Simplify right side
    154,302.98x = 18,377,429,070.97
  5. Step 5: Solve for x
    x = 18,377,429,070.97/154,302.98
  6. Step 6: Final answer
    x = 119,099.64

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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.