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Finding the Fourth Proportional to 113,875.20, 157,507.20 and 100,627.20

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Solution

The fourth proportional to 113,875.20, 157,507.20 and 100,627.20 is: 139,183.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,875.20 : 157,507.20 = 100,627.20 : x
  2. Step 2: Convert to fraction form
    113,875.20/157,507.20 = 100,627.20/x
  3. Step 3: Cross multiply
    113,875.20x = 157,507.20 × 100,627.20
  4. Step 4: Simplify right side
    113,875.20x = 15,849,508,515.84
  5. Step 5: Solve for x
    x = 15,849,508,515.84/113,875.20
  6. Step 6: Final answer
    x = 139,183.15

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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.