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Finding the Fourth Proportional to 98,374.19, 135,744.05 and 55,348.38

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Solution

The fourth proportional to 98,374.19, 135,744.05 and 55,348.38 is: 76,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,374.19 : 135,744.05 = 55,348.38 : x
  2. Step 2: Convert to fraction form
    98,374.19/135,744.05 = 55,348.38/x
  3. Step 3: Cross multiply
    98,374.19x = 135,744.05 × 55,348.38
  4. Step 4: Simplify right side
    98,374.19x = 7,513,213,400.51
  5. Step 5: Solve for x
    x = 7,513,213,400.51/98,374.19
  6. Step 6: Final answer
    x = 76,373.83

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1.5x scale

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.