Home / 189,683.16-261,458.72-128,410.02

Finding the Fourth Proportional to 189,683.16, 261,458.72 and 128,410.02

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Solution

The fourth proportional to 189,683.16, 261,458.72 and 128,410.02 is: 177,000.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,683.16 : 261,458.72 = 128,410.02 : x
  2. Step 2: Convert to fraction form
    189,683.16/261,458.72 = 128,410.02/x
  3. Step 3: Cross multiply
    189,683.16x = 261,458.72 × 128,410.02
  4. Step 4: Simplify right side
    189,683.16x = 33,573,918,822.32
  5. Step 5: Solve for x
    x = 33,573,918,822.32/189,683.16
  6. Step 6: Final answer
    x = 177,000.00

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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.