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Finding the Fourth Proportional to 133,417.40, 184,114.49 and 72,987.34

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Solution

The fourth proportional to 133,417.40, 184,114.49 and 72,987.34 is: 100,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,417.40 : 184,114.49 = 72,987.34 : x
  2. Step 2: Convert to fraction form
    133,417.40/184,114.49 = 72,987.34/x
  3. Step 3: Cross multiply
    133,417.40x = 184,114.49 × 72,987.34
  4. Step 4: Simplify right side
    133,417.40x = 13,438,026,880.56
  5. Step 5: Solve for x
    x = 13,438,026,880.56/133,417.40
  6. Step 6: Final answer
    x = 100,721.70

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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.