Home / 230,953.02-318,711.80-128,977.40

Finding the Fourth Proportional to 230,953.02, 318,711.80 and 128,977.40

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Solution

The fourth proportional to 230,953.02, 318,711.80 and 128,977.40 is: 177,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,953.02 : 318,711.80 = 128,977.40 : x
  2. Step 2: Convert to fraction form
    230,953.02/318,711.80 = 128,977.40/x
  3. Step 3: Cross multiply
    230,953.02x = 318,711.80 × 128,977.40
  4. Step 4: Simplify right side
    230,953.02x = 41,106,619,313.32
  5. Step 5: Solve for x
    x = 41,106,619,313.32/230,953.02
  6. Step 6: Final answer
    x = 177,986.93

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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.