Home / 154,670.03-213,440.80-90,135.08

Finding the Fourth Proportional to 154,670.03, 213,440.80 and 90,135.08

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Solution

The fourth proportional to 154,670.03, 213,440.80 and 90,135.08 is: 124,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,670.03 : 213,440.80 = 90,135.08 : x
  2. Step 2: Convert to fraction form
    154,670.03/213,440.80 = 90,135.08/x
  3. Step 3: Cross multiply
    154,670.03x = 213,440.80 × 90,135.08
  4. Step 4: Simplify right side
    154,670.03x = 19,238,503,006.62
  5. Step 5: Solve for x
    x = 19,238,503,006.62/154,670.03
  6. Step 6: Final answer
    x = 124,384.17

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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.