Home / 131,275,390.52-181,159,979.12-72,537,541.88

Finding the Fourth Proportional to 131,275,390.52, 181,159,979.12 and 72,537,541.88

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Solution

The fourth proportional to 131,275,390.52, 181,159,979.12 and 72,537,541.88 is: 100,101,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,275,390.52 : 181,159,979.12 = 72,537,541.88 : x
  2. Step 2: Convert to fraction form
    131,275,390.52/181,159,979.12 = 72,537,541.88/x
  3. Step 3: Cross multiply
    131,275,390.52x = 181,159,979.12 × 72,537,541.88
  4. Step 4: Simplify right side
    131,275,390.52x = 13,140,899,572,396,926
  5. Step 5: Solve for x
    x = 13,140,899,572,396,926/131,275,390.52
  6. Step 6: Final answer
    x = 100,101,774.75

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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.