Home / 103,398.95-142,748.29-82,928.63

Finding the Fourth Proportional to 103,398.95, 142,748.29 and 82,928.63

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Solution

The fourth proportional to 103,398.95, 142,748.29 and 82,928.63 is: 114,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,398.95 : 142,748.29 = 82,928.63 : x
  2. Step 2: Convert to fraction form
    103,398.95/142,748.29 = 82,928.63/x
  3. Step 3: Cross multiply
    103,398.95x = 142,748.29 × 82,928.63
  4. Step 4: Simplify right side
    103,398.95x = 11,837,920,585.07
  5. Step 5: Solve for x
    x = 11,837,920,585.07/103,398.95
  6. Step 6: Final answer
    x = 114,487.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.