Home / 105,545.97-145,652.35-57,147.07

Finding the Fourth Proportional to 105,545.97, 145,652.35 and 57,147.07

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Solution

The fourth proportional to 105,545.97, 145,652.35 and 57,147.07 is: 78,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,545.97 : 145,652.35 = 57,147.07 : x
  2. Step 2: Convert to fraction form
    105,545.97/145,652.35 = 57,147.07/x
  3. Step 3: Cross multiply
    105,545.97x = 145,652.35 × 57,147.07
  4. Step 4: Simplify right side
    105,545.97x = 8,323,605,075.09
  5. Step 5: Solve for x
    x = 8,323,605,075.09/105,545.97
  6. Step 6: Final answer
    x = 78,862.36

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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.