Home / 236,421.81-326,263.15-128,994.09

Finding the Fourth Proportional to 236,421.81, 326,263.15 and 128,994.09

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Solution

The fourth proportional to 236,421.81, 326,263.15 and 128,994.09 is: 178,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,421.81 : 326,263.15 = 128,994.09 : x
  2. Step 2: Convert to fraction form
    236,421.81/326,263.15 = 128,994.09/x
  3. Step 3: Cross multiply
    236,421.81x = 326,263.15 × 128,994.09
  4. Step 4: Simplify right side
    236,421.81x = 42,086,018,134.78
  5. Step 5: Solve for x
    x = 42,086,018,134.78/236,421.81
  6. Step 6: Final answer
    x = 178,012.42

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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.