Home / 137,970.48-190,400.91-77,537.58

Finding the Fourth Proportional to 137,970.48, 190,400.91 and 77,537.58

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Solution

The fourth proportional to 137,970.48, 190,400.91 and 77,537.58 is: 107,002.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,970.48 : 190,400.91 = 77,537.58 : x
  2. Step 2: Convert to fraction form
    137,970.48/190,400.91 = 77,537.58/x
  3. Step 3: Cross multiply
    137,970.48x = 190,400.91 × 77,537.58
  4. Step 4: Simplify right side
    137,970.48x = 14,763,225,791.20
  5. Step 5: Solve for x
    x = 14,763,225,791.20/137,970.48
  6. Step 6: Final answer
    x = 107,002.79

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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.