Home / 143,347.05-197,829.20-85,988.79

Finding the Fourth Proportional to 143,347.05, 197,829.20 and 85,988.79

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Solution

The fourth proportional to 143,347.05, 197,829.20 and 85,988.79 is: 118,670.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,347.05 : 197,829.20 = 85,988.79 : x
  2. Step 2: Convert to fraction form
    143,347.05/197,829.20 = 85,988.79/x
  3. Step 3: Cross multiply
    143,347.05x = 197,829.20 × 85,988.79
  4. Step 4: Simplify right side
    143,347.05x = 17,011,093,749.64
  5. Step 5: Solve for x
    x = 17,011,093,749.64/143,347.05
  6. Step 6: Final answer
    x = 118,670.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.