Home / 156,615,087.06-216,128,707.65-87,006,978.90

Finding the Fourth Proportional to 156,615,087.06, 216,128,707.65 and 87,006,978.90

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Solution

The fourth proportional to 156,615,087.06, 216,128,707.65 and 87,006,978.90 is: 120,069,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,615,087.06 : 216,128,707.65 = 87,006,978.90 : x
  2. Step 2: Convert to fraction form
    156,615,087.06/216,128,707.65 = 87,006,978.90/x
  3. Step 3: Cross multiply
    156,615,087.06x = 216,128,707.65 × 87,006,978.90
  4. Step 4: Simplify right side
    156,615,087.06x = 18,804,705,906,187,820
  5. Step 5: Solve for x
    x = 18,804,705,906,187,820/156,615,087.06
  6. Step 6: Final answer
    x = 120,069,568.39

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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.