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Finding the Fourth Proportional to 103,954.40, 155,115.08 and 97,606.60

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Solution

The fourth proportional to 103,954.40, 155,115.08 and 97,606.60 is: 145,643.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,954.40 : 155,115.08 = 97,606.60 : x
  2. Step 2: Convert to fraction form
    103,954.40/155,115.08 = 97,606.60/x
  3. Step 3: Cross multiply
    103,954.40x = 155,115.08 × 97,606.60
  4. Step 4: Simplify right side
    103,954.40x = 15,140,255,567.53
  5. Step 5: Solve for x
    x = 15,140,255,567.53/103,954.40
  6. Step 6: Final answer
    x = 145,643.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.