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Finding the Fourth Proportional to 145,615.64, 218,423.30 and 45,784.58

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Solution

The fourth proportional to 145,615.64, 218,423.30 and 45,784.58 is: 68,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,615.64 : 218,423.30 = 45,784.58 : x
  2. Step 2: Convert to fraction form
    145,615.64/218,423.30 = 45,784.58/x
  3. Step 3: Cross multiply
    145,615.64x = 218,423.30 × 45,784.58
  4. Step 4: Simplify right side
    145,615.64x = 10,000,419,052.71
  5. Step 5: Solve for x
    x = 10,000,419,052.71/145,615.64
  6. Step 6: Final answer
    x = 68,676.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.