Home / 145,740.82-201,117.02-81,206.72

Finding the Fourth Proportional to 145,740.82, 201,117.02 and 81,206.72

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Solution

The fourth proportional to 145,740.82, 201,117.02 and 81,206.72 is: 112,062.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,740.82 : 201,117.02 = 81,206.72 : x
  2. Step 2: Convert to fraction form
    145,740.82/201,117.02 = 81,206.72/x
  3. Step 3: Cross multiply
    145,740.82x = 201,117.02 × 81,206.72
  4. Step 4: Simplify right side
    145,740.82x = 16,332,053,530.37
  5. Step 5: Solve for x
    x = 16,332,053,530.37/145,740.82
  6. Step 6: Final answer
    x = 112,062.31

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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.