Home / 98,943.84-136,535.75-63,129.89

Finding the Fourth Proportional to 98,943.84, 136,535.75 and 63,129.89

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Solution

The fourth proportional to 98,943.84, 136,535.75 and 63,129.89 is: 87,114.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,943.84 : 136,535.75 = 63,129.89 : x
  2. Step 2: Convert to fraction form
    98,943.84/136,535.75 = 63,129.89/x
  3. Step 3: Cross multiply
    98,943.84x = 136,535.75 × 63,129.89
  4. Step 4: Simplify right side
    98,943.84x = 8,619,486,878.57
  5. Step 5: Solve for x
    x = 8,619,486,878.57/98,943.84
  6. Step 6: Final answer
    x = 87,114.94

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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.