Home / 112,809.90-155,657.93-64,389.72

Finding the Fourth Proportional to 112,809.90, 155,657.93 and 64,389.72

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Solution

The fourth proportional to 112,809.90, 155,657.93 and 64,389.72 is: 88,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,809.90 : 155,657.93 = 64,389.72 : x
  2. Step 2: Convert to fraction form
    112,809.90/155,657.93 = 64,389.72/x
  3. Step 3: Cross multiply
    112,809.90x = 155,657.93 × 64,389.72
  4. Step 4: Simplify right side
    112,809.90x = 10,022,770,206.53
  5. Step 5: Solve for x
    x = 10,022,770,206.53/112,809.90
  6. Step 6: Final answer
    x = 88,846.55

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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.