Home / 138,329,913.60-207,494,870.40-42,591,801.60

Finding the Fourth Proportional to 138,329,913.60, 207,494,870.40 and 42,591,801.60

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Solution

The fourth proportional to 138,329,913.60, 207,494,870.40 and 42,591,801.60 is: 63,887,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,329,913.60 : 207,494,870.40 = 42,591,801.60 : x
  2. Step 2: Convert to fraction form
    138,329,913.60/207,494,870.40 = 42,591,801.60/x
  3. Step 3: Cross multiply
    138,329,913.60x = 207,494,870.40 × 42,591,801.60
  4. Step 4: Simplify right side
    138,329,913.60x = 8,837,580,353,094,513
  5. Step 5: Solve for x
    x = 8,837,580,353,094,513/138,329,913.60
  6. Step 6: Final answer
    x = 63,887,702.40

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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.