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Finding the Fourth Proportional to 121,159,402.40, 181,740,140.40 and 40,380,370.40

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Solution

The fourth proportional to 121,159,402.40, 181,740,140.40 and 40,380,370.40 is: 60,570,901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,159,402.40 : 181,740,140.40 = 40,380,370.40 : x
  2. Step 2: Convert to fraction form
    121,159,402.40/181,740,140.40 = 40,380,370.40/x
  3. Step 3: Cross multiply
    121,159,402.40x = 181,740,140.40 × 40,380,370.40
  4. Step 4: Simplify right side
    121,159,402.40x = 7,338,734,185,900,004
  5. Step 5: Solve for x
    x = 7,338,734,185,900,004/121,159,402.40
  6. Step 6: Final answer
    x = 60,570,901.15

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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.