Home / 124,864.53-172,165.82-100,917.15

Finding the Fourth Proportional to 124,864.53, 172,165.82 and 100,917.15

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Solution

The fourth proportional to 124,864.53, 172,165.82 and 100,917.15 is: 139,146.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,864.53 : 172,165.82 = 100,917.15 : x
  2. Step 2: Convert to fraction form
    124,864.53/172,165.82 = 100,917.15/x
  3. Step 3: Cross multiply
    124,864.53x = 172,165.82 × 100,917.15
  4. Step 4: Simplify right side
    124,864.53x = 17,374,483,377.23
  5. Step 5: Solve for x
    x = 17,374,483,377.23/124,864.53
  6. Step 6: Final answer
    x = 139,146.67

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1.5x scale

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.