Home / 107,938.89-148,996.70-81,159.16

Finding the Fourth Proportional to 107,938.89, 148,996.70 and 81,159.16

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Solution

The fourth proportional to 107,938.89, 148,996.70 and 81,159.16 is: 112,030.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,938.89 : 148,996.70 = 81,159.16 : x
  2. Step 2: Convert to fraction form
    107,938.89/148,996.70 = 81,159.16/x
  3. Step 3: Cross multiply
    107,938.89x = 148,996.70 × 81,159.16
  4. Step 4: Simplify right side
    107,938.89x = 12,092,447,014.77
  5. Step 5: Solve for x
    x = 12,092,447,014.77/107,938.89
  6. Step 6: Final answer
    x = 112,030.49

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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.