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Finding the Fourth Proportional to 107,526.40, 161,289.60 and 77,881.60

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Solution

The fourth proportional to 107,526.40, 161,289.60 and 77,881.60 is: 116,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,526.40 : 161,289.60 = 77,881.60 : x
  2. Step 2: Convert to fraction form
    107,526.40/161,289.60 = 77,881.60/x
  3. Step 3: Cross multiply
    107,526.40x = 161,289.60 × 77,881.60
  4. Step 4: Simplify right side
    107,526.40x = 12,561,492,111.36
  5. Step 5: Solve for x
    x = 12,561,492,111.36/107,526.40
  6. Step 6: Final answer
    x = 116,822.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.