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Finding the Fourth Proportional to 103,807.89, 143,254.89 and 56,061.23

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Solution

The fourth proportional to 103,807.89, 143,254.89 and 56,061.23 is: 77,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.89 : 143,254.89 = 56,061.23 : x
  2. Step 2: Convert to fraction form
    103,807.89/143,254.89 = 56,061.23/x
  3. Step 3: Cross multiply
    103,807.89x = 143,254.89 × 56,061.23
  4. Step 4: Simplify right side
    103,807.89x = 8,031,044,620.64
  5. Step 5: Solve for x
    x = 8,031,044,620.64/103,807.89
  6. Step 6: Final answer
    x = 77,364.49

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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.