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Finding the Fourth Proportional to 143,661.87, 215,492.93 and 45,165.87

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Solution

The fourth proportional to 143,661.87, 215,492.93 and 45,165.87 is: 67,748.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,661.87 : 215,492.93 = 45,165.87 : x
  2. Step 2: Convert to fraction form
    143,661.87/215,492.93 = 45,165.87/x
  3. Step 3: Cross multiply
    143,661.87x = 215,492.93 × 45,165.87
  4. Step 4: Simplify right side
    143,661.87x = 9,732,925,436.47
  5. Step 5: Solve for x
    x = 9,732,925,436.47/143,661.87
  6. Step 6: Final answer
    x = 67,748.84

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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.