Home / 145,878.86-201,305.06-81,354.72

Finding the Fourth Proportional to 145,878.86, 201,305.06 and 81,354.72

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Solution

The fourth proportional to 145,878.86, 201,305.06 and 81,354.72 is: 112,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,878.86 : 201,305.06 = 81,354.72 : x
  2. Step 2: Convert to fraction form
    145,878.86/201,305.06 = 81,354.72/x
  3. Step 3: Cross multiply
    145,878.86x = 201,305.06 × 81,354.72
  4. Step 4: Simplify right side
    145,878.86x = 16,377,117,444.08
  5. Step 5: Solve for x
    x = 16,377,117,444.08/145,878.86
  6. Step 6: Final answer
    x = 112,265.18

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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.