Home / 145,786.43-201,116.52-85,319.63

Finding the Fourth Proportional to 145,786.43, 201,116.52 and 85,319.63

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Solution

The fourth proportional to 145,786.43, 201,116.52 and 85,319.63 is: 117,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,786.43 : 201,116.52 = 85,319.63 : x
  2. Step 2: Convert to fraction form
    145,786.43/201,116.52 = 85,319.63/x
  3. Step 3: Cross multiply
    145,786.43x = 201,116.52 × 85,319.63
  4. Step 4: Simplify right side
    145,786.43x = 17,159,187,073.29
  5. Step 5: Solve for x
    x = 17,159,187,073.29/145,786.43
  6. Step 6: Final answer
    x = 117,700.85

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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.