Home / 156,428.02-215,872.23-84,807.88

Finding the Fourth Proportional to 156,428.02, 215,872.23 and 84,807.88

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Solution

The fourth proportional to 156,428.02, 215,872.23 and 84,807.88 is: 117,035.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,428.02 : 215,872.23 = 84,807.88 : x
  2. Step 2: Convert to fraction form
    156,428.02/215,872.23 = 84,807.88/x
  3. Step 3: Cross multiply
    156,428.02x = 215,872.23 × 84,807.88
  4. Step 4: Simplify right side
    156,428.02x = 18,307,666,177.17
  5. Step 5: Solve for x
    x = 18,307,666,177.17/156,428.02
  6. Step 6: Final answer
    x = 117,035.72

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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.