Home / 128,742,992.96-177,666,254.52-70,005,237.18

Finding the Fourth Proportional to 128,742,992.96, 177,666,254.52 and 70,005,237.18

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Solution

The fourth proportional to 128,742,992.96, 177,666,254.52 and 70,005,237.18 is: 96,607,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742,992.96 : 177,666,254.52 = 70,005,237.18 : x
  2. Step 2: Convert to fraction form
    128,742,992.96/177,666,254.52 = 70,005,237.18/x
  3. Step 3: Cross multiply
    128,742,992.96x = 177,666,254.52 × 70,005,237.18
  4. Step 4: Simplify right side
    128,742,992.96x = 12,437,568,285,626,080
  5. Step 5: Solve for x
    x = 12,437,568,285,626,080/128,742,992.96
  6. Step 6: Final answer
    x = 96,607,729.87

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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.