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Finding the Fourth Proportional to 143,699.51, 215,549.31 and 43,860.26

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Solution

The fourth proportional to 143,699.51, 215,549.31 and 43,860.26 is: 65,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,699.51 : 215,549.31 = 43,860.26 : x
  2. Step 2: Convert to fraction form
    143,699.51/215,549.31 = 43,860.26/x
  3. Step 3: Cross multiply
    143,699.51x = 215,549.31 × 43,860.26
  4. Step 4: Simplify right side
    143,699.51x = 9,454,048,779.42
  5. Step 5: Solve for x
    x = 9,454,048,779.42/143,699.51
  6. Step 6: Final answer
    x = 65,790.40

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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.