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Finding the Fourth Proportional to 157,578.40, 217,531.72 and 101,022.08

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Solution

The fourth proportional to 157,578.40, 217,531.72 and 101,022.08 is: 139,457.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,578.40 : 217,531.72 = 101,022.08 : x
  2. Step 2: Convert to fraction form
    157,578.40/217,531.72 = 101,022.08/x
  3. Step 3: Cross multiply
    157,578.40x = 217,531.72 × 101,022.08
  4. Step 4: Simplify right side
    157,578.40x = 21,975,506,820.38
  5. Step 5: Solve for x
    x = 21,975,506,820.38/157,578.40
  6. Step 6: Final answer
    x = 139,457.61

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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.