Home / 154,272.65-212,915.97-86,293.40

Finding the Fourth Proportional to 154,272.65, 212,915.97 and 86,293.40

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Solution

The fourth proportional to 154,272.65, 212,915.97 and 86,293.40 is: 119,095.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,272.65 : 212,915.97 = 86,293.40 : x
  2. Step 2: Convert to fraction form
    154,272.65/212,915.97 = 86,293.40/x
  3. Step 3: Cross multiply
    154,272.65x = 212,915.97 × 86,293.40
  4. Step 4: Simplify right side
    154,272.65x = 18,373,241,901.02
  5. Step 5: Solve for x
    x = 18,373,241,901.02/154,272.65
  6. Step 6: Final answer
    x = 119,095.92

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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.