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Finding the Fourth Proportional to 107,648.90, 148,401.48 and 75,718.70

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Solution

The fourth proportional to 107,648.90, 148,401.48 and 75,718.70 is: 104,383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,648.90 : 148,401.48 = 75,718.70 : x
  2. Step 2: Convert to fraction form
    107,648.90/148,401.48 = 75,718.70/x
  3. Step 3: Cross multiply
    107,648.90x = 148,401.48 × 75,718.70
  4. Step 4: Simplify right side
    107,648.90x = 11,236,767,242.12
  5. Step 5: Solve for x
    x = 11,236,767,242.12/107,648.90
  6. Step 6: Final answer
    x = 104,383.49

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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.