Home / 111,998,155.80-168,123,204.90-86,551,973.40

Finding the Fourth Proportional to 111,998,155.80, 168,123,204.90 and 86,551,973.40

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Solution

The fourth proportional to 111,998,155.80, 168,123,204.90 and 86,551,973.40 is: 129,925,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998,155.80 : 168,123,204.90 = 86,551,973.40 : x
  2. Step 2: Convert to fraction form
    111,998,155.80/168,123,204.90 = 86,551,973.40/x
  3. Step 3: Cross multiply
    111,998,155.80x = 168,123,204.90 × 86,551,973.40
  4. Step 4: Simplify right side
    111,998,155.80x = 14,551,395,158,427,552
  5. Step 5: Solve for x
    x = 14,551,395,158,427,552/111,998,155.80
  6. Step 6: Final answer
    x = 129,925,310.42

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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.