Home / 103,666.06-155,496.21-72,521.74

Finding the Fourth Proportional to 103,666.06, 155,496.21 and 72,521.74

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Solution

The fourth proportional to 103,666.06, 155,496.21 and 72,521.74 is: 108,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,666.06 : 155,496.21 = 72,521.74 : x
  2. Step 2: Convert to fraction form
    103,666.06/155,496.21 = 72,521.74/x
  3. Step 3: Cross multiply
    103,666.06x = 155,496.21 × 72,521.74
  4. Step 4: Simplify right side
    103,666.06x = 11,276,855,712.61
  5. Step 5: Solve for x
    x = 11,276,855,712.61/103,666.06
  6. Step 6: Final answer
    x = 108,780.60

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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.