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Finding the Fourth Proportional to 145,915.56, 201,362.47 and 85,473.25

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Solution

The fourth proportional to 145,915.56, 201,362.47 and 85,473.25 is: 117,952.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,915.56 : 201,362.47 = 85,473.25 : x
  2. Step 2: Convert to fraction form
    145,915.56/201,362.47 = 85,473.25/x
  3. Step 3: Cross multiply
    145,915.56x = 201,362.47 × 85,473.25
  4. Step 4: Simplify right side
    145,915.56x = 17,211,104,021.84
  5. Step 5: Solve for x
    x = 17,211,104,021.84/145,915.56
  6. Step 6: Final answer
    x = 117,952.49

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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.