Home / 145,566.40-218,359.68-56,790.40

Finding the Fourth Proportional to 145,566.40, 218,359.68 and 56,790.40

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Solution

The fourth proportional to 145,566.40, 218,359.68 and 56,790.40 is: 85,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,566.40 : 218,359.68 = 56,790.40 : x
  2. Step 2: Convert to fraction form
    145,566.40/218,359.68 = 56,790.40/x
  3. Step 3: Cross multiply
    145,566.40x = 218,359.68 × 56,790.40
  4. Step 4: Simplify right side
    145,566.40x = 12,400,733,571.07
  5. Step 5: Solve for x
    x = 12,400,733,571.07/145,566.40
  6. Step 6: Final answer
    x = 85,189.53

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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.