Home / 128,111,686.08-176,806,772.64-73,115,770.56

Finding the Fourth Proportional to 128,111,686.08, 176,806,772.64 and 73,115,770.56

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Solution

The fourth proportional to 128,111,686.08, 176,806,772.64 and 73,115,770.56 is: 100,906,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,111,686.08 : 176,806,772.64 = 73,115,770.56 : x
  2. Step 2: Convert to fraction form
    128,111,686.08/176,806,772.64 = 73,115,770.56/x
  3. Step 3: Cross multiply
    128,111,686.08x = 176,806,772.64 × 73,115,770.56
  4. Step 4: Simplify right side
    128,111,686.08x = 12,927,363,421,800,324
  5. Step 5: Solve for x
    x = 12,927,363,421,800,324/128,111,686.08
  6. Step 6: Final answer
    x = 100,906,980.60

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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.