Home / 128,208.16-176,927.64-71,621.68

Finding the Fourth Proportional to 128,208.16, 176,927.64 and 71,621.68

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Solution

The fourth proportional to 128,208.16, 176,927.64 and 71,621.68 is: 98,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,208.16 : 176,927.64 = 71,621.68 : x
  2. Step 2: Convert to fraction form
    128,208.16/176,927.64 = 71,621.68/x
  3. Step 3: Cross multiply
    128,208.16x = 176,927.64 × 71,621.68
  4. Step 4: Simplify right side
    128,208.16x = 12,671,854,815.24
  5. Step 5: Solve for x
    x = 12,671,854,815.24/128,208.16
  6. Step 6: Final answer
    x = 98,838.13

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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.