Home / 236,369.60-326,178.06-128,938.76

Finding the Fourth Proportional to 236,369.60, 326,178.06 and 128,938.76

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Solution

The fourth proportional to 236,369.60, 326,178.06 and 128,938.76 is: 177,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,369.60 : 326,178.06 = 128,938.76 : x
  2. Step 2: Convert to fraction form
    236,369.60/326,178.06 = 128,938.76/x
  3. Step 3: Cross multiply
    236,369.60x = 326,178.06 × 128,938.76
  4. Step 4: Simplify right side
    236,369.60x = 42,056,994,595.61
  5. Step 5: Solve for x
    x = 42,056,994,595.61/236,369.60
  6. Step 6: Final answer
    x = 177,928.95

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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.