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Finding the Fourth Proportional to 145,000.45, 217,492.02 and 45,146.59

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Solution

The fourth proportional to 145,000.45, 217,492.02 and 45,146.59 is: 67,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,000.45 : 217,492.02 = 45,146.59 : x
  2. Step 2: Convert to fraction form
    145,000.45/217,492.02 = 45,146.59/x
  3. Step 3: Cross multiply
    145,000.45x = 217,492.02 × 45,146.59
  4. Step 4: Simplify right side
    145,000.45x = 9,819,023,055.21
  5. Step 5: Solve for x
    x = 9,819,023,055.21/145,000.45
  6. Step 6: Final answer
    x = 67,717.19

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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.