Home / 191,968.80-287,953.20-128,983.20

Finding the Fourth Proportional to 191,968.80, 287,953.20 and 128,983.20

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Solution

The fourth proportional to 191,968.80, 287,953.20 and 128,983.20 is: 193,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,968.80 : 287,953.20 = 128,983.20 : x
  2. Step 2: Convert to fraction form
    191,968.80/287,953.20 = 128,983.20/x
  3. Step 3: Cross multiply
    191,968.80x = 287,953.20 × 128,983.20
  4. Step 4: Simplify right side
    191,968.80x = 37,141,125,186.24
  5. Step 5: Solve for x
    x = 37,141,125,186.24/191,968.80
  6. Step 6: Final answer
    x = 193,474.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.