Home / 145,899.12-218,688.30-57,136.08

Finding the Fourth Proportional to 145,899.12, 218,688.30 and 57,136.08

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Solution

The fourth proportional to 145,899.12, 218,688.30 and 57,136.08 is: 85,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,899.12 : 218,688.30 = 57,136.08 : x
  2. Step 2: Convert to fraction form
    145,899.12/218,688.30 = 57,136.08/x
  3. Step 3: Cross multiply
    145,899.12x = 218,688.30 × 57,136.08
  4. Step 4: Simplify right side
    145,899.12x = 12,494,992,203.86
  5. Step 5: Solve for x
    x = 12,494,992,203.86/145,899.12
  6. Step 6: Final answer
    x = 85,641.31

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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.