Home / 154,261.96-212,871.76-86,285.16

Finding the Fourth Proportional to 154,261.96, 212,871.76 and 86,285.16

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Solution

The fourth proportional to 154,261.96, 212,871.76 and 86,285.16 is: 119,068.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,261.96 : 212,871.76 = 86,285.16 : x
  2. Step 2: Convert to fraction form
    154,261.96/212,871.76 = 86,285.16/x
  3. Step 3: Cross multiply
    154,261.96x = 212,871.76 × 86,285.16
  4. Step 4: Simplify right side
    154,261.96x = 18,367,673,871.08
  5. Step 5: Solve for x
    x = 18,367,673,871.08/154,261.96
  6. Step 6: Final answer
    x = 119,068.07

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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.