Home / 101,971.29-140,742.89-56,664.86

Finding the Fourth Proportional to 101,971.29, 140,742.89 and 56,664.86

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Solution

The fourth proportional to 101,971.29, 140,742.89 and 56,664.86 is: 78,210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,971.29 : 140,742.89 = 56,664.86 : x
  2. Step 2: Convert to fraction form
    101,971.29/140,742.89 = 56,664.86/x
  3. Step 3: Cross multiply
    101,971.29x = 140,742.89 × 56,664.86
  4. Step 4: Simplify right side
    101,971.29x = 7,975,175,741.45
  5. Step 5: Solve for x
    x = 7,975,175,741.45/101,971.29
  6. Step 6: Final answer
    x = 78,210.01

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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.