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Finding the Fourth Proportional to 128,802.60, 173,330.55 and 128,802.60

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Solution

The fourth proportional to 128,802.60, 173,330.55 and 128,802.60 is: 173,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,802.60 : 173,330.55 = 128,802.60 : x
  2. Step 2: Convert to fraction form
    128,802.60/173,330.55 = 128,802.60/x
  3. Step 3: Cross multiply
    128,802.60x = 173,330.55 × 128,802.60
  4. Step 4: Simplify right side
    128,802.60x = 22,325,425,499.43
  5. Step 5: Solve for x
    x = 22,325,425,499.43/128,802.60
  6. Step 6: Final answer
    x = 173,330.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.