Home / 103,820.13-143,271.81-56,073.51

Finding the Fourth Proportional to 103,820.13, 143,271.81 and 56,073.51

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Solution

The fourth proportional to 103,820.13, 143,271.81 and 56,073.51 is: 77,381.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,820.13 : 143,271.81 = 56,073.51 : x
  2. Step 2: Convert to fraction form
    103,820.13/143,271.81 = 56,073.51/x
  3. Step 3: Cross multiply
    103,820.13x = 143,271.81 × 56,073.51
  4. Step 4: Simplify right side
    103,820.13x = 8,033,753,270.75
  5. Step 5: Solve for x
    x = 8,033,753,270.75/103,820.13
  6. Step 6: Final answer
    x = 77,381.46

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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.