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Finding the Fourth Proportional to 157,215.40, 235,851.81 and 72,963.95

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Solution

The fourth proportional to 157,215.40, 235,851.81 and 72,963.95 is: 109,459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,215.40 : 235,851.81 = 72,963.95 : x
  2. Step 2: Convert to fraction form
    157,215.40/235,851.81 = 72,963.95/x
  3. Step 3: Cross multiply
    157,215.40x = 235,851.81 × 72,963.95
  4. Step 4: Simplify right side
    157,215.40x = 17,208,680,261.88
  5. Step 5: Solve for x
    x = 17,208,680,261.88/157,215.40
  6. Step 6: Final answer
    x = 109,459.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.