Home / 121,320,128.40-181,980,192.60-120,564,301.20

Finding the Fourth Proportional to 121,320,128.40, 181,980,192.60 and 120,564,301.20

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Solution

The fourth proportional to 121,320,128.40, 181,980,192.60 and 120,564,301.20 is: 180,846,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,320,128.40 : 181,980,192.60 = 120,564,301.20 : x
  2. Step 2: Convert to fraction form
    121,320,128.40/181,980,192.60 = 120,564,301.20/x
  3. Step 3: Cross multiply
    121,320,128.40x = 181,980,192.60 × 120,564,301.20
  4. Step 4: Simplify right side
    121,320,128.40x = 21,940,314,753,060,412
  5. Step 5: Solve for x
    x = 21,940,314,753,060,412/121,320,128.40
  6. Step 6: Final answer
    x = 180,846,451.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.