Home / 103,988.32-143,503.89-56,241.66

Finding the Fourth Proportional to 103,988.32, 143,503.89 and 56,241.66

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Solution

The fourth proportional to 103,988.32, 143,503.89 and 56,241.66 is: 77,613.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,988.32 : 143,503.89 = 56,241.66 : x
  2. Step 2: Convert to fraction form
    103,988.32/143,503.89 = 56,241.66/x
  3. Step 3: Cross multiply
    103,988.32x = 143,503.89 × 56,241.66
  4. Step 4: Simplify right side
    103,988.32x = 8,070,896,990.06
  5. Step 5: Solve for x
    x = 8,070,896,990.06/103,988.32
  6. Step 6: Final answer
    x = 77,613.50

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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.