Home / 120,128,195.15-165,775,416.27-70,573,086.08

Finding the Fourth Proportional to 120,128,195.15, 165,775,416.27 and 70,573,086.08

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Solution

The fourth proportional to 120,128,195.15, 165,775,416.27 and 70,573,086.08 is: 97,389,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,128,195.15 : 165,775,416.27 = 70,573,086.08 : x
  2. Step 2: Convert to fraction form
    120,128,195.15/165,775,416.27 = 70,573,086.08/x
  3. Step 3: Cross multiply
    120,128,195.15x = 165,775,416.27 × 70,573,086.08
  4. Step 4: Simplify right side
    120,128,195.15x = 11,699,282,722,370,542
  5. Step 5: Solve for x
    x = 11,699,282,722,370,542/120,128,195.15
  6. Step 6: Final answer
    x = 97,389,981.66

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1.5x scale

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.