Home / 128,750,001.60-177,661,565.28-73,748,176.32

Finding the Fourth Proportional to 128,750,001.60, 177,661,565.28 and 73,748,176.32

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Solution

The fourth proportional to 128,750,001.60, 177,661,565.28 and 73,748,176.32 is: 101,764,786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,750,001.60 : 177,661,565.28 = 73,748,176.32 : x
  2. Step 2: Convert to fraction form
    128,750,001.60/177,661,565.28 = 73,748,176.32/x
  3. Step 3: Cross multiply
    128,750,001.60x = 177,661,565.28 × 73,748,176.32
  4. Step 4: Simplify right side
    128,750,001.60x = 13,102,216,441,556,628
  5. Step 5: Solve for x
    x = 13,102,216,441,556,628/128,750,001.60
  6. Step 6: Final answer
    x = 101,764,786.63

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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.