Home / 121,331,649.60-181,997,474.40-80,516,980.80

Finding the Fourth Proportional to 121,331,649.60, 181,997,474.40 and 80,516,980.80

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Solution

The fourth proportional to 121,331,649.60, 181,997,474.40 and 80,516,980.80 is: 120,775,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,331,649.60 : 181,997,474.40 = 80,516,980.80 : x
  2. Step 2: Convert to fraction form
    121,331,649.60/181,997,474.40 = 80,516,980.80/x
  3. Step 3: Cross multiply
    121,331,649.60x = 181,997,474.40 × 80,516,980.80
  4. Step 4: Simplify right side
    121,331,649.60x = 14,653,887,151,913,292
  5. Step 5: Solve for x
    x = 14,653,887,151,913,292/121,331,649.60
  6. Step 6: Final answer
    x = 120,775,471.20

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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.