Home / 145,143.56-217,729.10-56,403.92

Finding the Fourth Proportional to 145,143.56, 217,729.10 and 56,403.92

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Solution

The fourth proportional to 145,143.56, 217,729.10 and 56,403.92 is: 84,611.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,143.56 : 217,729.10 = 56,403.92 : x
  2. Step 2: Convert to fraction form
    145,143.56/217,729.10 = 56,403.92/x
  3. Step 3: Cross multiply
    145,143.56x = 217,729.10 × 56,403.92
  4. Step 4: Simplify right side
    145,143.56x = 12,280,775,423.40
  5. Step 5: Solve for x
    x = 12,280,775,423.40/145,143.56
  6. Step 6: Final answer
    x = 84,611.23

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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.