Home / 145,534.02-200,836.17-81,872.22

Finding the Fourth Proportional to 145,534.02, 200,836.17 and 81,872.22

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Solution

The fourth proportional to 145,534.02, 200,836.17 and 81,872.22 is: 112,983.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,534.02 : 200,836.17 = 81,872.22 : x
  2. Step 2: Convert to fraction form
    145,534.02/200,836.17 = 81,872.22/x
  3. Step 3: Cross multiply
    145,534.02x = 200,836.17 × 81,872.22
  4. Step 4: Simplify right side
    145,534.02x = 16,442,903,094.20
  5. Step 5: Solve for x
    x = 16,442,903,094.20/145,534.02
  6. Step 6: Final answer
    x = 112,983.23

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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.