Home / 103,154.90-154,715.74-28,257.53

Finding the Fourth Proportional to 103,154.90, 154,715.74 and 28,257.53

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Solution

The fourth proportional to 103,154.90, 154,715.74 and 28,257.53 is: 42,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,154.90 : 154,715.74 = 28,257.53 : x
  2. Step 2: Convert to fraction form
    103,154.90/154,715.74 = 28,257.53/x
  3. Step 3: Cross multiply
    103,154.90x = 154,715.74 × 28,257.53
  4. Step 4: Simplify right side
    103,154.90x = 4,371,884,980.67
  5. Step 5: Solve for x
    x = 4,371,884,980.67/103,154.90
  6. Step 6: Final answer
    x = 42,381.75

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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.