Home / 95,721.40-143,322.90-74,985.40

Finding the Fourth Proportional to 95,721.40, 143,322.90 and 74,985.40

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Solution

The fourth proportional to 95,721.40, 143,322.90 and 74,985.40 is: 112,275.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,721.40 : 143,322.90 = 74,985.40 : x
  2. Step 2: Convert to fraction form
    95,721.40/143,322.90 = 74,985.40/x
  3. Step 3: Cross multiply
    95,721.40x = 143,322.90 × 74,985.40
  4. Step 4: Simplify right side
    95,721.40x = 10,747,124,985.66
  5. Step 5: Solve for x
    x = 10,747,124,985.66/95,721.40
  6. Step 6: Final answer
    x = 112,275.05

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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.