Home / 210,985.59-316,395-68,795.91

Finding the Fourth Proportional to 210,985.59, 316,395 and 68,795.91

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Solution

The fourth proportional to 210,985.59, 316,395 and 68,795.91 is: 103,166.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,985.59 : 316,395 = 68,795.91 : x
  2. Step 2: Convert to fraction form
    210,985.59/316,395 = 68,795.91/x
  3. Step 3: Cross multiply
    210,985.59x = 316,395 × 68,795.91
  4. Step 4: Simplify right side
    210,985.59x = 21,766,681,944.45
  5. Step 5: Solve for x
    x = 21,766,681,944.45/210,985.59
  6. Step 6: Final answer
    x = 103,166.68

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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.