Home / 112,965.02-155,763.90-72,074.43

Finding the Fourth Proportional to 112,965.02, 155,763.90 and 72,074.43

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Solution

The fourth proportional to 112,965.02, 155,763.90 and 72,074.43 is: 99,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,965.02 : 155,763.90 = 72,074.43 : x
  2. Step 2: Convert to fraction form
    112,965.02/155,763.90 = 72,074.43/x
  3. Step 3: Cross multiply
    112,965.02x = 155,763.90 × 72,074.43
  4. Step 4: Simplify right side
    112,965.02x = 11,226,594,307.08
  5. Step 5: Solve for x
    x = 11,226,594,307.08/112,965.02
  6. Step 6: Final answer
    x = 99,381.16

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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.