Home / 115,089.28-158,741.36-76,829.52

Finding the Fourth Proportional to 115,089.28, 158,741.36 and 76,829.52

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Solution

The fourth proportional to 115,089.28, 158,741.36 and 76,829.52 is: 105,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,089.28 : 158,741.36 = 76,829.52 : x
  2. Step 2: Convert to fraction form
    115,089.28/158,741.36 = 76,829.52/x
  3. Step 3: Cross multiply
    115,089.28x = 158,741.36 × 76,829.52
  4. Step 4: Simplify right side
    115,089.28x = 12,196,022,492.95
  5. Step 5: Solve for x
    x = 12,196,022,492.95/115,089.28
  6. Step 6: Final answer
    x = 105,970.10

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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.