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Finding the Fourth Proportional to 103,953.98, 143,456.55 and 56,207.28

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Solution

The fourth proportional to 103,953.98, 143,456.55 and 56,207.28 is: 77,566.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,953.98 : 143,456.55 = 56,207.28 : x
  2. Step 2: Convert to fraction form
    103,953.98/143,456.55 = 56,207.28/x
  3. Step 3: Cross multiply
    103,953.98x = 143,456.55 × 56,207.28
  4. Step 4: Simplify right side
    103,953.98x = 8,063,303,117.03
  5. Step 5: Solve for x
    x = 8,063,303,117.03/103,953.98
  6. Step 6: Final answer
    x = 77,566.08

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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.