Home / 143,475.72-198,017.54-86,119.08

Finding the Fourth Proportional to 143,475.72, 198,017.54 and 86,119.08

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Solution

The fourth proportional to 143,475.72, 198,017.54 and 86,119.08 is: 118,856.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,475.72 : 198,017.54 = 86,119.08 : x
  2. Step 2: Convert to fraction form
    143,475.72/198,017.54 = 86,119.08/x
  3. Step 3: Cross multiply
    143,475.72x = 198,017.54 × 86,119.08
  4. Step 4: Simplify right side
    143,475.72x = 17,053,088,368.66
  5. Step 5: Solve for x
    x = 17,053,088,368.66/143,475.72
  6. Step 6: Final answer
    x = 118,856.96

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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.