Home / 142,001.41-195,962.61-78,339.19

Finding the Fourth Proportional to 142,001.41, 195,962.61 and 78,339.19

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Solution

The fourth proportional to 142,001.41, 195,962.61 and 78,339.19 is: 108,108.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,001.41 : 195,962.61 = 78,339.19 : x
  2. Step 2: Convert to fraction form
    142,001.41/195,962.61 = 78,339.19/x
  3. Step 3: Cross multiply
    142,001.41x = 195,962.61 × 78,339.19
  4. Step 4: Simplify right side
    142,001.41x = 15,351,552,137.69
  5. Step 5: Solve for x
    x = 15,351,552,137.69/142,001.41
  6. Step 6: Final answer
    x = 108,108.45

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1.5x scale

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.