Home / 102,126.02-153,126.55-42,135.90

Finding the Fourth Proportional to 102,126.02, 153,126.55 and 42,135.90

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Solution

The fourth proportional to 102,126.02, 153,126.55 and 42,135.90 is: 63,178.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,126.02 : 153,126.55 = 42,135.90 : x
  2. Step 2: Convert to fraction form
    102,126.02/153,126.55 = 42,135.90/x
  3. Step 3: Cross multiply
    102,126.02x = 153,126.55 × 42,135.90
  4. Step 4: Simplify right side
    102,126.02x = 6,452,124,476.59
  5. Step 5: Solve for x
    x = 6,452,124,476.59/102,126.02
  6. Step 6: Final answer
    x = 63,178.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.