Home / 157,402.09-217,212.06-85,782.70

Finding the Fourth Proportional to 157,402.09, 217,212.06 and 85,782.70

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Solution

The fourth proportional to 157,402.09, 217,212.06 and 85,782.70 is: 118,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,402.09 : 217,212.06 = 85,782.70 : x
  2. Step 2: Convert to fraction form
    157,402.09/217,212.06 = 85,782.70/x
  3. Step 3: Cross multiply
    157,402.09x = 217,212.06 × 85,782.70
  4. Step 4: Simplify right side
    157,402.09x = 18,633,036,979.36
  5. Step 5: Solve for x
    x = 18,633,036,979.36/157,402.09
  6. Step 6: Final answer
    x = 118,378.59

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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.