Home / 161,909.12-242,884.02-86,926.20

Finding the Fourth Proportional to 161,909.12, 242,884.02 and 86,926.20

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Solution

The fourth proportional to 161,909.12, 242,884.02 and 86,926.20 is: 130,400.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,909.12 : 242,884.02 = 86,926.20 : x
  2. Step 2: Convert to fraction form
    161,909.12/242,884.02 = 86,926.20/x
  3. Step 3: Cross multiply
    161,909.12x = 242,884.02 × 86,926.20
  4. Step 4: Simplify right side
    161,909.12x = 21,112,984,899.32
  5. Step 5: Solve for x
    x = 21,112,984,899.32/161,909.12
  6. Step 6: Final answer
    x = 130,400.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.