Home / 153,231.60-211,428-89,556.96

Finding the Fourth Proportional to 153,231.60, 211,428 and 89,556.96

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Solution

The fourth proportional to 153,231.60, 211,428 and 89,556.96 is: 123,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,231.60 : 211,428 = 89,556.96 : x
  2. Step 2: Convert to fraction form
    153,231.60/211,428 = 89,556.96/x
  3. Step 3: Cross multiply
    153,231.60x = 211,428 × 89,556.96
  4. Step 4: Simplify right side
    153,231.60x = 18,934,848,938.88
  5. Step 5: Solve for x
    x = 18,934,848,938.88/153,231.60
  6. Step 6: Final answer
    x = 123,570.13

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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.