Home / 98,698.23-136,043.59-77,149.90

Finding the Fourth Proportional to 98,698.23, 136,043.59 and 77,149.90

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Solution

The fourth proportional to 98,698.23, 136,043.59 and 77,149.90 is: 106,341.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,698.23 : 136,043.59 = 77,149.90 : x
  2. Step 2: Convert to fraction form
    98,698.23/136,043.59 = 77,149.90/x
  3. Step 3: Cross multiply
    98,698.23x = 136,043.59 × 77,149.90
  4. Step 4: Simplify right side
    98,698.23x = 10,495,749,364.14
  5. Step 5: Solve for x
    x = 10,495,749,364.14/98,698.23
  6. Step 6: Final answer
    x = 106,341.82

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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.