Home / 105,391.12-145,445.07-62,395.29

Finding the Fourth Proportional to 105,391.12, 145,445.07 and 62,395.29

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Solution

The fourth proportional to 105,391.12, 145,445.07 and 62,395.29 is: 86,108.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.12 : 145,445.07 = 62,395.29 : x
  2. Step 2: Convert to fraction form
    105,391.12/145,445.07 = 62,395.29/x
  3. Step 3: Cross multiply
    105,391.12x = 145,445.07 × 62,395.29
  4. Step 4: Simplify right side
    105,391.12x = 9,075,087,321.72
  5. Step 5: Solve for x
    x = 9,075,087,321.72/105,391.12
  6. Step 6: Final answer
    x = 86,108.65

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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.