Home / 237,783.12-328,140-130,357.68

Finding the Fourth Proportional to 237,783.12, 328,140 and 130,357.68

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Solution

The fourth proportional to 237,783.12, 328,140 and 130,357.68 is: 179,893.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,783.12 : 328,140 = 130,357.68 : x
  2. Step 2: Convert to fraction form
    237,783.12/328,140 = 130,357.68/x
  3. Step 3: Cross multiply
    237,783.12x = 328,140 × 130,357.68
  4. Step 4: Simplify right side
    237,783.12x = 42,775,569,115.20
  5. Step 5: Solve for x
    x = 42,775,569,115.20/237,783.12
  6. Step 6: Final answer
    x = 179,893.21

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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.