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Finding the Fourth Proportional to 207,985.73, 287,019.99 and 112,492.13

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Solution

The fourth proportional to 207,985.73, 287,019.99 and 112,492.13 is: 155,238.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,985.73 : 287,019.99 = 112,492.13 : x
  2. Step 2: Convert to fraction form
    207,985.73/287,019.99 = 112,492.13/x
  3. Step 3: Cross multiply
    207,985.73x = 287,019.99 × 112,492.13
  4. Step 4: Simplify right side
    207,985.73x = 32,287,488,592.58
  5. Step 5: Solve for x
    x = 32,287,488,592.58/207,985.73
  6. Step 6: Final answer
    x = 155,238.96

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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.