Home / 128,332.83-177,103.05-70,973.88

Finding the Fourth Proportional to 128,332.83, 177,103.05 and 70,973.88

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Solution

The fourth proportional to 128,332.83, 177,103.05 and 70,973.88 is: 97,946.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,332.83 : 177,103.05 = 70,973.88 : x
  2. Step 2: Convert to fraction form
    128,332.83/177,103.05 = 70,973.88/x
  3. Step 3: Cross multiply
    128,332.83x = 177,103.05 × 70,973.88
  4. Step 4: Simplify right side
    128,332.83x = 12,569,690,618.33
  5. Step 5: Solve for x
    x = 12,569,690,618.33/128,332.83
  6. Step 6: Final answer
    x = 97,946.03

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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.