Home / 138,528,993.60-207,656,438.40-65,617,621.20

Finding the Fourth Proportional to 138,528,993.60, 207,656,438.40 and 65,617,621.20

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Solution

The fourth proportional to 138,528,993.60, 207,656,438.40 and 65,617,621.20 is: 98,361,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,528,993.60 : 207,656,438.40 = 65,617,621.20 : x
  2. Step 2: Convert to fraction form
    138,528,993.60/207,656,438.40 = 65,617,621.20/x
  3. Step 3: Cross multiply
    138,528,993.60x = 207,656,438.40 × 65,617,621.20
  4. Step 4: Simplify right side
    138,528,993.60x = 13,625,921,514,672,336
  5. Step 5: Solve for x
    x = 13,625,921,514,672,336/138,528,993.60
  6. Step 6: Final answer
    x = 98,361,513.79

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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.