Home / 154,359.28-213,008.56-86,384.89

Finding the Fourth Proportional to 154,359.28, 213,008.56 and 86,384.89

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Solution

The fourth proportional to 154,359.28, 213,008.56 and 86,384.89 is: 119,207.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.28 : 213,008.56 = 86,384.89 : x
  2. Step 2: Convert to fraction form
    154,359.28/213,008.56 = 86,384.89/x
  3. Step 3: Cross multiply
    154,359.28x = 213,008.56 × 86,384.89
  4. Step 4: Simplify right side
    154,359.28x = 18,400,721,024.66
  5. Step 5: Solve for x
    x = 18,400,721,024.66/154,359.28
  6. Step 6: Final answer
    x = 119,207.09

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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.