Home / 135,748.73-187,360.51-78,397.39

Finding the Fourth Proportional to 135,748.73, 187,360.51 and 78,397.39

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Solution

The fourth proportional to 135,748.73, 187,360.51 and 78,397.39 is: 108,204.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,748.73 : 187,360.51 = 78,397.39 : x
  2. Step 2: Convert to fraction form
    135,748.73/187,360.51 = 78,397.39/x
  3. Step 3: Cross multiply
    135,748.73x = 187,360.51 × 78,397.39
  4. Step 4: Simplify right side
    135,748.73x = 14,688,574,973.07
  5. Step 5: Solve for x
    x = 14,688,574,973.07/135,748.73
  6. Step 6: Final answer
    x = 108,204.14

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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.