Home / 120,825.27-181,312.75-70,248.10

Finding the Fourth Proportional to 120,825.27, 181,312.75 and 70,248.10

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Solution

The fourth proportional to 120,825.27, 181,312.75 and 70,248.10 is: 105,415.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,825.27 : 181,312.75 = 70,248.10 : x
  2. Step 2: Convert to fraction form
    120,825.27/181,312.75 = 70,248.10/x
  3. Step 3: Cross multiply
    120,825.27x = 181,312.75 × 70,248.10
  4. Step 4: Simplify right side
    120,825.27x = 12,736,875,842.03
  5. Step 5: Solve for x
    x = 12,736,875,842.03/120,825.27
  6. Step 6: Final answer
    x = 105,415.66

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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.