Home / 154,402.02-212,905.58-100,587.24

Finding the Fourth Proportional to 154,402.02, 212,905.58 and 100,587.24

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Solution

The fourth proportional to 154,402.02, 212,905.58 and 100,587.24 is: 138,700.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,402.02 : 212,905.58 = 100,587.24 : x
  2. Step 2: Convert to fraction form
    154,402.02/212,905.58 = 100,587.24/x
  3. Step 3: Cross multiply
    154,402.02x = 212,905.58 × 100,587.24
  4. Step 4: Simplify right side
    154,402.02x = 21,415,584,672.80
  5. Step 5: Solve for x
    x = 21,415,584,672.80/154,402.02
  6. Step 6: Final answer
    x = 138,700.16

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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.