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Finding the Fourth Proportional to 153,719.70, 212,100.93 and 93,322.14

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Solution

The fourth proportional to 153,719.70, 212,100.93 and 93,322.14 is: 128,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,719.70 : 212,100.93 = 93,322.14 : x
  2. Step 2: Convert to fraction form
    153,719.70/212,100.93 = 93,322.14/x
  3. Step 3: Cross multiply
    153,719.70x = 212,100.93 × 93,322.14
  4. Step 4: Simplify right side
    153,719.70x = 19,793,712,683.59
  5. Step 5: Solve for x
    x = 19,793,712,683.59/153,719.70
  6. Step 6: Final answer
    x = 128,764.97

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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.