Home / 107,838,411.20-161,757,616.80-77,227,409.60

Finding the Fourth Proportional to 107,838,411.20, 161,757,616.80 and 77,227,409.60

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Solution

The fourth proportional to 107,838,411.20, 161,757,616.80 and 77,227,409.60 is: 115,841,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,838,411.20 : 161,757,616.80 = 77,227,409.60 : x
  2. Step 2: Convert to fraction form
    107,838,411.20/161,757,616.80 = 77,227,409.60/x
  3. Step 3: Cross multiply
    107,838,411.20x = 161,757,616.80 × 77,227,409.60
  4. Step 4: Simplify right side
    107,838,411.20x = 12,492,121,728,533,442
  5. Step 5: Solve for x
    x = 12,492,121,728,533,442/107,838,411.20
  6. Step 6: Final answer
    x = 115,841,114.40

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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.