Home / 102,567.80-141,618.58-66,290.72

Finding the Fourth Proportional to 102,567.80, 141,618.58 and 66,290.72

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Solution

The fourth proportional to 102,567.80, 141,618.58 and 66,290.72 is: 91,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,567.80 : 141,618.58 = 66,290.72 : x
  2. Step 2: Convert to fraction form
    102,567.80/141,618.58 = 66,290.72/x
  3. Step 3: Cross multiply
    102,567.80x = 141,618.58 × 66,290.72
  4. Step 4: Simplify right side
    102,567.80x = 9,387,997,656.17
  5. Step 5: Solve for x
    x = 9,387,997,656.17/102,567.80
  6. Step 6: Final answer
    x = 91,529.68

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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.