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Finding the Fourth Proportional to 216,803.76, 299,153.49 and 136,173.85

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Solution

The fourth proportional to 216,803.76, 299,153.49 and 136,173.85 is: 187,897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,803.76 : 299,153.49 = 136,173.85 : x
  2. Step 2: Convert to fraction form
    216,803.76/299,153.49 = 136,173.85/x
  3. Step 3: Cross multiply
    216,803.76x = 299,153.49 × 136,173.85
  4. Step 4: Simplify right side
    216,803.76x = 40,736,881,215.70
  5. Step 5: Solve for x
    x = 40,736,881,215.70/216,803.76
  6. Step 6: Final answer
    x = 187,897.49

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1.5x scale

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.