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Finding the Fourth Proportional to 103,437.73, 155,287.95 and 87,953.77

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Solution

The fourth proportional to 103,437.73, 155,287.95 and 87,953.77 is: 132,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,437.73 : 155,287.95 = 87,953.77 : x
  2. Step 2: Convert to fraction form
    103,437.73/155,287.95 = 87,953.77/x
  3. Step 3: Cross multiply
    103,437.73x = 155,287.95 × 87,953.77
  4. Step 4: Simplify right side
    103,437.73x = 13,658,160,638.07
  5. Step 5: Solve for x
    x = 13,658,160,638.07/103,437.73
  6. Step 6: Final answer
    x = 132,042.35

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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.