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Finding the Fourth Proportional to 155,687.68, 233,382 and 99,368.80

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Solution

The fourth proportional to 155,687.68, 233,382 and 99,368.80 is: 148,957.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,687.68 : 233,382 = 99,368.80 : x
  2. Step 2: Convert to fraction form
    155,687.68/233,382 = 99,368.80/x
  3. Step 3: Cross multiply
    155,687.68x = 233,382 × 99,368.80
  4. Step 4: Simplify right side
    155,687.68x = 23,190,889,281.60
  5. Step 5: Solve for x
    x = 23,190,889,281.60/155,687.68
  6. Step 6: Final answer
    x = 148,957.77

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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.