Home / 115,329.90-159,155.51-64,341.36

Finding the Fourth Proportional to 115,329.90, 159,155.51 and 64,341.36

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Solution

The fourth proportional to 115,329.90, 159,155.51 and 64,341.36 is: 88,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,329.90 : 159,155.51 = 64,341.36 : x
  2. Step 2: Convert to fraction form
    115,329.90/159,155.51 = 64,341.36/x
  3. Step 3: Cross multiply
    115,329.90x = 159,155.51 × 64,341.36
  4. Step 4: Simplify right side
    115,329.90x = 10,240,281,643.19
  5. Step 5: Solve for x
    x = 10,240,281,643.19/115,329.90
  6. Step 6: Final answer
    x = 88,791.21

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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.