Home / 145,170.24-200,319.48-81,515.04

Finding the Fourth Proportional to 145,170.24, 200,319.48 and 81,515.04

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Solution

The fourth proportional to 145,170.24, 200,319.48 and 81,515.04 is: 112,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,170.24 : 200,319.48 = 81,515.04 : x
  2. Step 2: Convert to fraction form
    145,170.24/200,319.48 = 81,515.04/x
  3. Step 3: Cross multiply
    145,170.24x = 200,319.48 × 81,515.04
  4. Step 4: Simplify right side
    145,170.24x = 16,329,050,424.98
  5. Step 5: Solve for x
    x = 16,329,050,424.98/145,170.24
  6. Step 6: Final answer
    x = 112,482.08

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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.