Home / 153,938.88-212,333.40-90,214.56

Finding the Fourth Proportional to 153,938.88, 212,333.40 and 90,214.56

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Solution

The fourth proportional to 153,938.88, 212,333.40 and 90,214.56 is: 124,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,938.88 : 212,333.40 = 90,214.56 : x
  2. Step 2: Convert to fraction form
    153,938.88/212,333.40 = 90,214.56/x
  3. Step 3: Cross multiply
    153,938.88x = 212,333.40 × 90,214.56
  4. Step 4: Simplify right side
    153,938.88x = 19,155,564,254.30
  5. Step 5: Solve for x
    x = 19,155,564,254.30/153,938.88
  6. Step 6: Final answer
    x = 124,436.17

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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.