Home / 120,152.48-165,831-69,880.64

Finding the Fourth Proportional to 120,152.48, 165,831 and 69,880.64

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Solution

The fourth proportional to 120,152.48, 165,831 and 69,880.64 is: 96,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,152.48 : 165,831 = 69,880.64 : x
  2. Step 2: Convert to fraction form
    120,152.48/165,831 = 69,880.64/x
  3. Step 3: Cross multiply
    120,152.48x = 165,831 × 69,880.64
  4. Step 4: Simplify right side
    120,152.48x = 11,588,376,411.84
  5. Step 5: Solve for x
    x = 11,588,376,411.84/120,152.48
  6. Step 6: Final answer
    x = 96,447.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.