Home / 145,145.06-200,300.16-81,482.80

Finding the Fourth Proportional to 145,145.06, 200,300.16 and 81,482.80

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Solution

The fourth proportional to 145,145.06, 200,300.16 and 81,482.80 is: 112,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,145.06 : 200,300.16 = 81,482.80 : x
  2. Step 2: Convert to fraction form
    145,145.06/200,300.16 = 81,482.80/x
  3. Step 3: Cross multiply
    145,145.06x = 200,300.16 × 81,482.80
  4. Step 4: Simplify right side
    145,145.06x = 16,321,017,877.25
  5. Step 5: Solve for x
    x = 16,321,017,877.25/145,145.06
  6. Step 6: Final answer
    x = 112,446.25

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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.