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Finding the Fourth Proportional to 134,645.66, 185,800.08 and 78,060.68

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Solution

The fourth proportional to 134,645.66, 185,800.08 and 78,060.68 is: 107,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,645.66 : 185,800.08 = 78,060.68 : x
  2. Step 2: Convert to fraction form
    134,645.66/185,800.08 = 78,060.68/x
  3. Step 3: Cross multiply
    134,645.66x = 185,800.08 × 78,060.68
  4. Step 4: Simplify right side
    134,645.66x = 14,503,680,588.85
  5. Step 5: Solve for x
    x = 14,503,680,588.85/134,645.66
  6. Step 6: Final answer
    x = 107,717.40

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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.