Home / 154,521.72-213,190.02-86,528.52

Finding the Fourth Proportional to 154,521.72, 213,190.02 and 86,528.52

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Solution

The fourth proportional to 154,521.72, 213,190.02 and 86,528.52 is: 119,381.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,521.72 : 213,190.02 = 86,528.52 : x
  2. Step 2: Convert to fraction form
    154,521.72/213,190.02 = 86,528.52/x
  3. Step 3: Cross multiply
    154,521.72x = 213,190.02 × 86,528.52
  4. Step 4: Simplify right side
    154,521.72x = 18,447,016,909.37
  5. Step 5: Solve for x
    x = 18,447,016,909.37/154,521.72
  6. Step 6: Final answer
    x = 119,381.38

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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.