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Finding the Fourth Proportional to 157,361.69, 217,159.15 and 85,741.71

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Solution

The fourth proportional to 157,361.69, 217,159.15 and 85,741.71 is: 118,323.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,361.69 : 217,159.15 = 85,741.71 : x
  2. Step 2: Convert to fraction form
    157,361.69/217,159.15 = 85,741.71/x
  3. Step 3: Cross multiply
    157,361.69x = 217,159.15 × 85,741.71
  4. Step 4: Simplify right side
    157,361.69x = 18,619,598,068.64
  5. Step 5: Solve for x
    x = 18,619,598,068.64/157,361.69
  6. Step 6: Final answer
    x = 118,323.58

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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.