Home / 137,632,985.52-189,933,508.92-74,909,533.20

Finding the Fourth Proportional to 137,632,985.52, 189,933,508.92 and 74,909,533.20

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Solution

The fourth proportional to 137,632,985.52, 189,933,508.92 and 74,909,533.20 is: 103,375,149.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,632,985.52 : 189,933,508.92 = 74,909,533.20 : x
  2. Step 2: Convert to fraction form
    137,632,985.52/189,933,508.92 = 74,909,533.20/x
  3. Step 3: Cross multiply
    137,632,985.52x = 189,933,508.92 × 74,909,533.20
  4. Step 4: Simplify right side
    137,632,985.52x = 14,227,830,492,235,236
  5. Step 5: Solve for x
    x = 14,227,830,492,235,236/137,632,985.52
  6. Step 6: Final answer
    x = 103,375,149.78

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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.