Home / 236,359.32-326,176.80-128,931.60

Finding the Fourth Proportional to 236,359.32, 326,176.80 and 128,931.60

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Solution

The fourth proportional to 236,359.32, 326,176.80 and 128,931.60 is: 177,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,359.32 : 326,176.80 = 128,931.60 : x
  2. Step 2: Convert to fraction form
    236,359.32/326,176.80 = 128,931.60/x
  3. Step 3: Cross multiply
    236,359.32x = 326,176.80 × 128,931.60
  4. Step 4: Simplify right side
    236,359.32x = 42,054,496,706.88
  5. Step 5: Solve for x
    x = 42,054,496,706.88/236,359.32
  6. Step 6: Final answer
    x = 177,926.12

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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.