Home / 140,402,321.60-193,765,017.12-78,528,378.56

Finding the Fourth Proportional to 140,402,321.60, 193,765,017.12 and 78,528,378.56

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Solution

The fourth proportional to 140,402,321.60, 193,765,017.12 and 78,528,378.56 is: 108,374,651.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,402,321.60 : 193,765,017.12 = 78,528,378.56 : x
  2. Step 2: Convert to fraction form
    140,402,321.60/193,765,017.12 = 78,528,378.56/x
  3. Step 3: Cross multiply
    140,402,321.60x = 193,765,017.12 × 78,528,378.56
  4. Step 4: Simplify right side
    140,402,321.60x = 15,216,052,616,084,242
  5. Step 5: Solve for x
    x = 15,216,052,616,084,242/140,402,321.60
  6. Step 6: Final answer
    x = 108,374,651.09

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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.