Home / 115,366.39-159,205.31-64,378.58

Finding the Fourth Proportional to 115,366.39, 159,205.31 and 64,378.58

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Solution

The fourth proportional to 115,366.39, 159,205.31 and 64,378.58 is: 88,842.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,366.39 : 159,205.31 = 64,378.58 : x
  2. Step 2: Convert to fraction form
    115,366.39/159,205.31 = 64,378.58/x
  3. Step 3: Cross multiply
    115,366.39x = 159,205.31 × 64,378.58
  4. Step 4: Simplify right side
    115,366.39x = 10,249,411,151.18
  5. Step 5: Solve for x
    x = 10,249,411,151.18/115,366.39
  6. Step 6: Final answer
    x = 88,842.26

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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.