Home / 170,360,575.18-255,438,729.72-78,128,792.80

Finding the Fourth Proportional to 170,360,575.18, 255,438,729.72 and 78,128,792.80

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Solution

The fourth proportional to 170,360,575.18, 255,438,729.72 and 78,128,792.80 is: 117,146,350.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,360,575.18 : 255,438,729.72 = 78,128,792.80 : x
  2. Step 2: Convert to fraction form
    170,360,575.18/255,438,729.72 = 78,128,792.80/x
  3. Step 3: Cross multiply
    170,360,575.18x = 255,438,729.72 × 78,128,792.80
  4. Step 4: Simplify right side
    170,360,575.18x = 19,957,119,587,389,080
  5. Step 5: Solve for x
    x = 19,957,119,587,389,080/170,360,575.18
  6. Step 6: Final answer
    x = 117,146,350.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.