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Finding the Fourth Proportional to 157,730.69, 217,642.65 and 93,191.01

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Solution

The fourth proportional to 157,730.69, 217,642.65 and 93,191.01 is: 128,588.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,730.69 : 217,642.65 = 93,191.01 : x
  2. Step 2: Convert to fraction form
    157,730.69/217,642.65 = 93,191.01/x
  3. Step 3: Cross multiply
    157,730.69x = 217,642.65 × 93,191.01
  4. Step 4: Simplify right side
    157,730.69x = 20,282,338,372.58
  5. Step 5: Solve for x
    x = 20,282,338,372.58/157,730.69
  6. Step 6: Final answer
    x = 128,588.41

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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.