Home / 112,661,421.86-155,548,680-70,339,481.24

Finding the Fourth Proportional to 112,661,421.86, 155,548,680 and 70,339,481.24

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Solution

The fourth proportional to 112,661,421.86, 155,548,680 and 70,339,481.24 is: 97,115,882.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,661,421.86 : 155,548,680 = 70,339,481.24 : x
  2. Step 2: Convert to fraction form
    112,661,421.86/155,548,680 = 70,339,481.24/x
  3. Step 3: Cross multiply
    112,661,421.86x = 155,548,680 × 70,339,481.24
  4. Step 4: Simplify right side
    112,661,421.86x = 10,941,213,457,989,020
  5. Step 5: Solve for x
    x = 10,941,213,457,989,020/112,661,421.86
  6. Step 6: Final answer
    x = 97,115,882.94

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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.