Home / 128,953,123.20-193,429,684.80-112,156,963.20

Finding the Fourth Proportional to 128,953,123.20, 193,429,684.80 and 112,156,963.20

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Solution

The fourth proportional to 128,953,123.20, 193,429,684.80 and 112,156,963.20 is: 168,235,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,953,123.20 : 193,429,684.80 = 112,156,963.20 : x
  2. Step 2: Convert to fraction form
    128,953,123.20/193,429,684.80 = 112,156,963.20/x
  3. Step 3: Cross multiply
    128,953,123.20x = 193,429,684.80 × 112,156,963.20
  4. Step 4: Simplify right side
    128,953,123.20x = 21,694,486,039,901,200
  5. Step 5: Solve for x
    x = 21,694,486,039,901,200/128,953,123.20
  6. Step 6: Final answer
    x = 168,235,444.80

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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.