Home / 137,710.61-190,047.89-77,278.13

Finding the Fourth Proportional to 137,710.61, 190,047.89 and 77,278.13

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Solution

The fourth proportional to 137,710.61, 190,047.89 and 77,278.13 is: 106,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,710.61 : 190,047.89 = 77,278.13 : x
  2. Step 2: Convert to fraction form
    137,710.61/190,047.89 = 77,278.13/x
  3. Step 3: Cross multiply
    137,710.61x = 190,047.89 × 77,278.13
  4. Step 4: Simplify right side
    137,710.61x = 14,686,544,792.60
  5. Step 5: Solve for x
    x = 14,686,544,792.60/137,710.61
  6. Step 6: Final answer
    x = 106,647.89

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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.