Home / 157,387.24-217,155.90-100,875.16

Finding the Fourth Proportional to 157,387.24, 217,155.90 and 100,875.16

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Solution

The fourth proportional to 157,387.24, 217,155.90 and 100,875.16 is: 139,183.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,387.24 : 217,155.90 = 100,875.16 : x
  2. Step 2: Convert to fraction form
    157,387.24/217,155.90 = 100,875.16/x
  3. Step 3: Cross multiply
    157,387.24x = 217,155.90 × 100,875.16
  4. Step 4: Simplify right side
    157,387.24x = 21,905,636,157.44
  5. Step 5: Solve for x
    x = 21,905,636,157.44/157,387.24
  6. Step 6: Final answer
    x = 139,183.05

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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.