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Finding the Fourth Proportional to 133,603.28, 184,607.08 and 105,149.06

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Solution

The fourth proportional to 133,603.28, 184,607.08 and 105,149.06 is: 145,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,603.28 : 184,607.08 = 105,149.06 : x
  2. Step 2: Convert to fraction form
    133,603.28/184,607.08 = 105,149.06/x
  3. Step 3: Cross multiply
    133,603.28x = 184,607.08 × 105,149.06
  4. Step 4: Simplify right side
    133,603.28x = 19,411,260,931.34
  5. Step 5: Solve for x
    x = 19,411,260,931.34/133,603.28
  6. Step 6: Final answer
    x = 145,290.30

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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.