Home / 102,641.42-141,637.08-57,315.86

Finding the Fourth Proportional to 102,641.42, 141,637.08 and 57,315.86

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Solution

The fourth proportional to 102,641.42, 141,637.08 and 57,315.86 is: 79,091.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,641.42 : 141,637.08 = 57,315.86 : x
  2. Step 2: Convert to fraction form
    102,641.42/141,637.08 = 57,315.86/x
  3. Step 3: Cross multiply
    102,641.42x = 141,637.08 × 57,315.86
  4. Step 4: Simplify right side
    102,641.42x = 8,118,051,048.09
  5. Step 5: Solve for x
    x = 8,118,051,048.09/102,641.42
  6. Step 6: Final answer
    x = 79,091.38

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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.