Home / 128,343,342.56-177,136,452.14-76,161,150.77

Finding the Fourth Proportional to 128,343,342.56, 177,136,452.14 and 76,161,150.77

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Solution

The fourth proportional to 128,343,342.56, 177,136,452.14 and 76,161,150.77 is: 105,115,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,343,342.56 : 177,136,452.14 = 76,161,150.77 : x
  2. Step 2: Convert to fraction form
    128,343,342.56/177,136,452.14 = 76,161,150.77/x
  3. Step 3: Cross multiply
    128,343,342.56x = 177,136,452.14 × 76,161,150.77
  4. Step 4: Simplify right side
    128,343,342.56x = 13,490,916,037,030,940
  5. Step 5: Solve for x
    x = 13,490,916,037,030,940/128,343,342.56
  6. Step 6: Final answer
    x = 105,115,822.67

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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.