Home / 121,308.48-182,015.64-42,479.28

Finding the Fourth Proportional to 121,308.48, 182,015.64 and 42,479.28

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Solution

The fourth proportional to 121,308.48, 182,015.64 and 42,479.28 is: 63,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,308.48 : 182,015.64 = 42,479.28 : x
  2. Step 2: Convert to fraction form
    121,308.48/182,015.64 = 42,479.28/x
  3. Step 3: Cross multiply
    121,308.48x = 182,015.64 × 42,479.28
  4. Step 4: Simplify right side
    121,308.48x = 7,731,893,335.94
  5. Step 5: Solve for x
    x = 7,731,893,335.94/121,308.48
  6. Step 6: Final answer
    x = 63,737.45

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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.