Home / 155,880.02-215,106.36-87,895.10

Finding the Fourth Proportional to 155,880.02, 215,106.36 and 87,895.10

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Solution

The fourth proportional to 155,880.02, 215,106.36 and 87,895.10 is: 121,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,880.02 : 215,106.36 = 87,895.10 : x
  2. Step 2: Convert to fraction form
    155,880.02/215,106.36 = 87,895.10/x
  3. Step 3: Cross multiply
    155,880.02x = 215,106.36 × 87,895.10
  4. Step 4: Simplify right side
    155,880.02x = 18,906,795,022.84
  5. Step 5: Solve for x
    x = 18,906,795,022.84/155,880.02
  6. Step 6: Final answer
    x = 121,290.69

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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.