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Finding the Fourth Proportional to 121,303.17, 181,830.83 and 42,352.47

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Solution

The fourth proportional to 121,303.17, 181,830.83 and 42,352.47 is: 63,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,303.17 : 181,830.83 = 42,352.47 : x
  2. Step 2: Convert to fraction form
    121,303.17/181,830.83 = 42,352.47/x
  3. Step 3: Cross multiply
    121,303.17x = 181,830.83 × 42,352.47
  4. Step 4: Simplify right side
    121,303.17x = 7,700,984,560.89
  5. Step 5: Solve for x
    x = 7,700,984,560.89/121,303.17
  6. Step 6: Final answer
    x = 63,485.44

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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.