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Finding the Fourth Proportional to 128,053.35, 176,713.71 and 71,464.71

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Solution

The fourth proportional to 128,053.35, 176,713.71 and 71,464.71 is: 98,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,053.35 : 176,713.71 = 71,464.71 : x
  2. Step 2: Convert to fraction form
    128,053.35/176,713.71 = 71,464.71/x
  3. Step 3: Cross multiply
    128,053.35x = 176,713.71 × 71,464.71
  4. Step 4: Simplify right side
    128,053.35x = 12,628,794,038.17
  5. Step 5: Solve for x
    x = 12,628,794,038.17/128,053.35
  6. Step 6: Final answer
    x = 98,621.35

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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.