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Finding the Fourth Proportional to 134,653.61, 185,813.49 and 74,220.91

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Solution

The fourth proportional to 134,653.61, 185,813.49 and 74,220.91 is: 102,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,653.61 : 185,813.49 = 74,220.91 : x
  2. Step 2: Convert to fraction form
    134,653.61/185,813.49 = 74,220.91/x
  3. Step 3: Cross multiply
    134,653.61x = 185,813.49 × 74,220.91
  4. Step 4: Simplify right side
    134,653.61x = 13,791,246,318.08
  5. Step 5: Solve for x
    x = 13,791,246,318.08/134,653.61
  6. Step 6: Final answer
    x = 102,420.18

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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.