Home / 230,135.02-317,566.11-128,152.78

Finding the Fourth Proportional to 230,135.02, 317,566.11 and 128,152.78

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Solution

The fourth proportional to 230,135.02, 317,566.11 and 128,152.78 is: 176,839.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,135.02 : 317,566.11 = 128,152.78 : x
  2. Step 2: Convert to fraction form
    230,135.02/317,566.11 = 128,152.78/x
  3. Step 3: Cross multiply
    230,135.02x = 317,566.11 × 128,152.78
  4. Step 4: Simplify right side
    230,135.02x = 40,696,979,830.29
  5. Step 5: Solve for x
    x = 40,696,979,830.29/230,135.02
  6. Step 6: Final answer
    x = 176,839.58

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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.