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Finding the Fourth Proportional to 103,903.68, 143,386.74 and 56,156.88

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Solution

The fourth proportional to 103,903.68, 143,386.74 and 56,156.88 is: 77,496.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,903.68 : 143,386.74 = 56,156.88 : x
  2. Step 2: Convert to fraction form
    103,903.68/143,386.74 = 56,156.88/x
  3. Step 3: Cross multiply
    103,903.68x = 143,386.74 × 56,156.88
  4. Step 4: Simplify right side
    103,903.68x = 8,052,151,951.77
  5. Step 5: Solve for x
    x = 8,052,151,951.77/103,903.68
  6. Step 6: Final answer
    x = 77,496.31

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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.