Home / 157,124.07-216,830.66-85,502.79

Finding the Fourth Proportional to 157,124.07, 216,830.66 and 85,502.79

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Solution

The fourth proportional to 157,124.07, 216,830.66 and 85,502.79 is: 117,993.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,124.07 : 216,830.66 = 85,502.79 : x
  2. Step 2: Convert to fraction form
    157,124.07/216,830.66 = 85,502.79/x
  3. Step 3: Cross multiply
    157,124.07x = 216,830.66 × 85,502.79
  4. Step 4: Simplify right side
    157,124.07x = 18,539,625,960.03
  5. Step 5: Solve for x
    x = 18,539,625,960.03/157,124.07
  6. Step 6: Final answer
    x = 117,993.54

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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.