Home / 171,938.10-257,943.60-51,985.20

Finding the Fourth Proportional to 171,938.10, 257,943.60 and 51,985.20

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Solution

The fourth proportional to 171,938.10, 257,943.60 and 51,985.20 is: 77,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,938.10 : 257,943.60 = 51,985.20 : x
  2. Step 2: Convert to fraction form
    171,938.10/257,943.60 = 51,985.20/x
  3. Step 3: Cross multiply
    171,938.10x = 257,943.60 × 51,985.20
  4. Step 4: Simplify right side
    171,938.10x = 13,409,249,634.72
  5. Step 5: Solve for x
    x = 13,409,249,634.72/171,938.10
  6. Step 6: Final answer
    x = 77,988.82

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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.