Home / 153,848.72-212,310.65-85,864.95

Finding the Fourth Proportional to 153,848.72, 212,310.65 and 85,864.95

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Solution

The fourth proportional to 153,848.72, 212,310.65 and 85,864.95 is: 118,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,848.72 : 212,310.65 = 85,864.95 : x
  2. Step 2: Convert to fraction form
    153,848.72/212,310.65 = 85,864.95/x
  3. Step 3: Cross multiply
    153,848.72x = 212,310.65 × 85,864.95
  4. Step 4: Simplify right side
    153,848.72x = 18,230,043,561.38
  5. Step 5: Solve for x
    x = 18,230,043,561.38/153,848.72
  6. Step 6: Final answer
    x = 118,493.30

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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.