Home / 121,736.16-182,521.62-42,840

Finding the Fourth Proportional to 121,736.16, 182,521.62 and 42,840

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Solution

The fourth proportional to 121,736.16, 182,521.62 and 42,840 is: 64,230.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,736.16 : 182,521.62 = 42,840 : x
  2. Step 2: Convert to fraction form
    121,736.16/182,521.62 = 42,840/x
  3. Step 3: Cross multiply
    121,736.16x = 182,521.62 × 42,840
  4. Step 4: Simplify right side
    121,736.16x = 7,819,226,200.80
  5. Step 5: Solve for x
    x = 7,819,226,200.80/121,736.16
  6. Step 6: Final answer
    x = 64,230.93

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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.