Home / 123,585.41-170,547.47-66,996.78

Finding the Fourth Proportional to 123,585.41, 170,547.47 and 66,996.78

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Solution

The fourth proportional to 123,585.41, 170,547.47 and 66,996.78 is: 92,455.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,585.41 : 170,547.47 = 66,996.78 : x
  2. Step 2: Convert to fraction form
    123,585.41/170,547.47 = 66,996.78/x
  3. Step 3: Cross multiply
    123,585.41x = 170,547.47 × 66,996.78
  4. Step 4: Simplify right side
    123,585.41x = 11,426,130,992.16
  5. Step 5: Solve for x
    x = 11,426,130,992.16/123,585.41
  6. Step 6: Final answer
    x = 92,455.34

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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.