Home / 105,813.42-145,999.71-61,075.50

Finding the Fourth Proportional to 105,813.42, 145,999.71 and 61,075.50

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Solution

The fourth proportional to 105,813.42, 145,999.71 and 61,075.50 is: 84,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,813.42 : 145,999.71 = 61,075.50 : x
  2. Step 2: Convert to fraction form
    105,813.42/145,999.71 = 61,075.50/x
  3. Step 3: Cross multiply
    105,813.42x = 145,999.71 × 61,075.50
  4. Step 4: Simplify right side
    105,813.42x = 8,917,005,288.11
  5. Step 5: Solve for x
    x = 8,917,005,288.11/105,813.42
  6. Step 6: Final answer
    x = 84,271.02

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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.