Home / 128,384.16-177,218.72-114,931.24

Finding the Fourth Proportional to 128,384.16, 177,218.72 and 114,931.24

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Solution

The fourth proportional to 128,384.16, 177,218.72 and 114,931.24 is: 158,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,384.16 : 177,218.72 = 114,931.24 : x
  2. Step 2: Convert to fraction form
    128,384.16/177,218.72 = 114,931.24/x
  3. Step 3: Cross multiply
    128,384.16x = 177,218.72 × 114,931.24
  4. Step 4: Simplify right side
    128,384.16x = 20,367,967,240.81
  5. Step 5: Solve for x
    x = 20,367,967,240.81/128,384.16
  6. Step 6: Final answer
    x = 158,648.60

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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.