Home / 105,075.09-145,004.45-57,328.83

Finding the Fourth Proportional to 105,075.09, 145,004.45 and 57,328.83

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Solution

The fourth proportional to 105,075.09, 145,004.45 and 57,328.83 is: 79,114.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,075.09 : 145,004.45 = 57,328.83 : x
  2. Step 2: Convert to fraction form
    105,075.09/145,004.45 = 57,328.83/x
  3. Step 3: Cross multiply
    105,075.09x = 145,004.45 × 57,328.83
  4. Step 4: Simplify right side
    105,075.09x = 8,312,935,176.65
  5. Step 5: Solve for x
    x = 8,312,935,176.65/105,075.09
  6. Step 6: Final answer
    x = 79,114.23

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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.