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Finding the Fourth Proportional to 119,278,888.40, 178,666,390.20 and 119,278,888.40

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Solution

The fourth proportional to 119,278,888.40, 178,666,390.20 and 119,278,888.40 is: 178,666,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,278,888.40 : 178,666,390.20 = 119,278,888.40 : x
  2. Step 2: Convert to fraction form
    119,278,888.40/178,666,390.20 = 119,278,888.40/x
  3. Step 3: Cross multiply
    119,278,888.40x = 178,666,390.20 × 119,278,888.40
  4. Step 4: Simplify right side
    119,278,888.40x = 21,311,128,417,496,652
  5. Step 5: Solve for x
    x = 21,311,128,417,496,652/119,278,888.40
  6. Step 6: Final answer
    x = 178,666,390.20

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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.