Home / 236,406.60-326,229.12-128,975.76

Finding the Fourth Proportional to 236,406.60, 326,229.12 and 128,975.76

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Solution

The fourth proportional to 236,406.60, 326,229.12 and 128,975.76 is: 177,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,406.60 : 326,229.12 = 128,975.76 : x
  2. Step 2: Convert to fraction form
    236,406.60/326,229.12 = 128,975.76/x
  3. Step 3: Cross multiply
    236,406.60x = 326,229.12 × 128,975.76
  4. Step 4: Simplify right side
    236,406.60x = 42,075,648,686.13
  5. Step 5: Solve for x
    x = 42,075,648,686.13/236,406.60
  6. Step 6: Final answer
    x = 177,980.01

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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.