Home / 137,829.74-190,209.56-77,411.07

Finding the Fourth Proportional to 137,829.74, 190,209.56 and 77,411.07

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Solution

The fourth proportional to 137,829.74, 190,209.56 and 77,411.07 is: 106,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,829.74 : 190,209.56 = 77,411.07 : x
  2. Step 2: Convert to fraction form
    137,829.74/190,209.56 = 77,411.07/x
  3. Step 3: Cross multiply
    137,829.74x = 190,209.56 × 77,411.07
  4. Step 4: Simplify right side
    137,829.74x = 14,724,325,176.77
  5. Step 5: Solve for x
    x = 14,724,325,176.77/137,829.74
  6. Step 6: Final answer
    x = 106,829.82

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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.