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Finding the Fourth Proportional to 147,698.52, 203,395.14 and 128,308.65

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Solution

The fourth proportional to 147,698.52, 203,395.14 and 128,308.65 is: 176,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,698.52 : 203,395.14 = 128,308.65 : x
  2. Step 2: Convert to fraction form
    147,698.52/203,395.14 = 128,308.65/x
  3. Step 3: Cross multiply
    147,698.52x = 203,395.14 × 128,308.65
  4. Step 4: Simplify right side
    147,698.52x = 26,097,355,829.96
  5. Step 5: Solve for x
    x = 26,097,355,829.96/147,698.52
  6. Step 6: Final answer
    x = 176,693.41

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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.