Home / 230,946.12-318,699.52-128,968.76

Finding the Fourth Proportional to 230,946.12, 318,699.52 and 128,968.76

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Solution

The fourth proportional to 230,946.12, 318,699.52 and 128,968.76 is: 177,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,946.12 : 318,699.52 = 128,968.76 : x
  2. Step 2: Convert to fraction form
    230,946.12/318,699.52 = 128,968.76/x
  3. Step 3: Cross multiply
    230,946.12x = 318,699.52 × 128,968.76
  4. Step 4: Simplify right side
    230,946.12x = 41,102,281,907.00
  5. Step 5: Solve for x
    x = 41,102,281,907.00/230,946.12
  6. Step 6: Final answer
    x = 177,973.47

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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.