Home / 157,389.36-217,191.80-85,767.92

Finding the Fourth Proportional to 157,389.36, 217,191.80 and 85,767.92

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Solution

The fourth proportional to 157,389.36, 217,191.80 and 85,767.92 is: 118,356.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,389.36 : 217,191.80 = 85,767.92 : x
  2. Step 2: Convert to fraction form
    157,389.36/217,191.80 = 85,767.92/x
  3. Step 3: Cross multiply
    157,389.36x = 217,191.80 × 85,767.92
  4. Step 4: Simplify right side
    157,389.36x = 18,628,088,927.06
  5. Step 5: Solve for x
    x = 18,628,088,927.06/157,389.36
  6. Step 6: Final answer
    x = 118,356.72

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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.