Home / 157,328.39-217,112.81-85,709.00

Finding the Fourth Proportional to 157,328.39, 217,112.81 and 85,709.00

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Solution

The fourth proportional to 157,328.39, 217,112.81 and 85,709.00 is: 118,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,328.39 : 217,112.81 = 85,709.00 : x
  2. Step 2: Convert to fraction form
    157,328.39/217,112.81 = 85,709.00/x
  3. Step 3: Cross multiply
    157,328.39x = 217,112.81 × 85,709.00
  4. Step 4: Simplify right side
    157,328.39x = 18,608,521,946.53
  5. Step 5: Solve for x
    x = 18,608,521,946.53/157,328.39
  6. Step 6: Final answer
    x = 118,278.22

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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.