Home / 128,946.64-177,902.76-83,681.32

Finding the Fourth Proportional to 128,946.64, 177,902.76 and 83,681.32

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Solution

The fourth proportional to 128,946.64, 177,902.76 and 83,681.32 is: 115,451.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,946.64 : 177,902.76 = 83,681.32 : x
  2. Step 2: Convert to fraction form
    128,946.64/177,902.76 = 83,681.32/x
  3. Step 3: Cross multiply
    128,946.64x = 177,902.76 × 83,681.32
  4. Step 4: Simplify right side
    128,946.64x = 14,887,137,788.44
  5. Step 5: Solve for x
    x = 14,887,137,788.44/128,946.64
  6. Step 6: Final answer
    x = 115,451.92

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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.