Home / 186,851.64-257,681.10-123,078.60

Finding the Fourth Proportional to 186,851.64, 257,681.10 and 123,078.60

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Solution

The fourth proportional to 186,851.64, 257,681.10 and 123,078.60 is: 169,733.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,851.64 : 257,681.10 = 123,078.60 : x
  2. Step 2: Convert to fraction form
    186,851.64/257,681.10 = 123,078.60/x
  3. Step 3: Cross multiply
    186,851.64x = 257,681.10 × 123,078.60
  4. Step 4: Simplify right side
    186,851.64x = 31,715,029,034.46
  5. Step 5: Solve for x
    x = 31,715,029,034.46/186,851.64
  6. Step 6: Final answer
    x = 169,733.75

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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.