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Finding the Fourth Proportional to 155,357.80, 233,036.70 and 61,815.40

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Solution

The fourth proportional to 155,357.80, 233,036.70 and 61,815.40 is: 92,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,357.80 : 233,036.70 = 61,815.40 : x
  2. Step 2: Convert to fraction form
    155,357.80/233,036.70 = 61,815.40/x
  3. Step 3: Cross multiply
    155,357.80x = 233,036.70 × 61,815.40
  4. Step 4: Simplify right side
    155,357.80x = 14,405,256,825.18
  5. Step 5: Solve for x
    x = 14,405,256,825.18/155,357.80
  6. Step 6: Final answer
    x = 92,723.10

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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.