Home / 192,731.40-289,428-118,288.68

Finding the Fourth Proportional to 192,731.40, 289,428 and 118,288.68

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Solution

The fourth proportional to 192,731.40, 289,428 and 118,288.68 is: 177,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,731.40 : 289,428 = 118,288.68 : x
  2. Step 2: Convert to fraction form
    192,731.40/289,428 = 118,288.68/x
  3. Step 3: Cross multiply
    192,731.40x = 289,428 × 118,288.68
  4. Step 4: Simplify right side
    192,731.40x = 34,236,056,075.04
  5. Step 5: Solve for x
    x = 34,236,056,075.04/192,731.40
  6. Step 6: Final answer
    x = 177,636.11

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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.