Home / 147,645,609.80-221,507,121.90-56,772,163.40

Finding the Fourth Proportional to 147,645,609.80, 221,507,121.90 and 56,772,163.40

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Solution

The fourth proportional to 147,645,609.80, 221,507,121.90 and 56,772,163.40 is: 85,173,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,645,609.80 : 221,507,121.90 = 56,772,163.40 : x
  2. Step 2: Convert to fraction form
    147,645,609.80/221,507,121.90 = 56,772,163.40/x
  3. Step 3: Cross multiply
    147,645,609.80x = 221,507,121.90 × 56,772,163.40
  4. Step 4: Simplify right side
    147,645,609.80x = 12,575,438,518,770,518
  5. Step 5: Solve for x
    x = 12,575,438,518,770,518/147,645,609.80
  6. Step 6: Final answer
    x = 85,173,128.65

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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.