Home / 105,391.62-145,445.76-62,395.80

Finding the Fourth Proportional to 105,391.62, 145,445.76 and 62,395.80

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Solution

The fourth proportional to 105,391.62, 145,445.76 and 62,395.80 is: 86,109.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.62 : 145,445.76 = 62,395.80 : x
  2. Step 2: Convert to fraction form
    105,391.62/145,445.76 = 62,395.80/x
  3. Step 3: Cross multiply
    105,391.62x = 145,445.76 × 62,395.80
  4. Step 4: Simplify right side
    105,391.62x = 9,075,204,551.81
  5. Step 5: Solve for x
    x = 9,075,204,551.81/105,391.62
  6. Step 6: Final answer
    x = 86,109.36

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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.