Home / 105,101.21-145,042.85-59,785.70

Finding the Fourth Proportional to 105,101.21, 145,042.85 and 59,785.70

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Solution

The fourth proportional to 105,101.21, 145,042.85 and 59,785.70 is: 82,506.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,101.21 : 145,042.85 = 59,785.70 : x
  2. Step 2: Convert to fraction form
    105,101.21/145,042.85 = 59,785.70/x
  3. Step 3: Cross multiply
    105,101.21x = 145,042.85 × 59,785.70
  4. Step 4: Simplify right side
    105,101.21x = 8,671,487,741.49
  5. Step 5: Solve for x
    x = 8,671,487,741.49/105,101.21
  6. Step 6: Final answer
    x = 82,506.07

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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.