Home / 128,200,566.12-176,977,780.70-85,886,984.52

Finding the Fourth Proportional to 128,200,566.12, 176,977,780.70 and 85,886,984.52

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Solution

The fourth proportional to 128,200,566.12, 176,977,780.70 and 85,886,984.52 is: 118,564,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200,566.12 : 176,977,780.70 = 85,886,984.52 : x
  2. Step 2: Convert to fraction form
    128,200,566.12/176,977,780.70 = 85,886,984.52/x
  3. Step 3: Cross multiply
    128,200,566.12x = 176,977,780.70 × 85,886,984.52
  4. Step 4: Simplify right side
    128,200,566.12x = 15,200,087,911,364,854
  5. Step 5: Solve for x
    x = 15,200,087,911,364,854/128,200,566.12
  6. Step 6: Final answer
    x = 118,564,904.75

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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.