Home / 143,613.96-215,415.45-38,430.20

Finding the Fourth Proportional to 143,613.96, 215,415.45 and 38,430.20

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Solution

The fourth proportional to 143,613.96, 215,415.45 and 38,430.20 is: 57,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,613.96 : 215,415.45 = 38,430.20 : x
  2. Step 2: Convert to fraction form
    143,613.96/215,415.45 = 38,430.20/x
  3. Step 3: Cross multiply
    143,613.96x = 215,415.45 × 38,430.20
  4. Step 4: Simplify right side
    143,613.96x = 8,278,457,749.51
  5. Step 5: Solve for x
    x = 8,278,457,749.51/143,613.96
  6. Step 6: Final answer
    x = 57,643.82

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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.