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Finding the Fourth Proportional to 104,159.98, 143,740.05 and 56,412.23

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Solution

The fourth proportional to 104,159.98, 143,740.05 and 56,412.23 is: 77,848.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,159.98 : 143,740.05 = 56,412.23 : x
  2. Step 2: Convert to fraction form
    104,159.98/143,740.05 = 56,412.23/x
  3. Step 3: Cross multiply
    104,159.98x = 143,740.05 × 56,412.23
  4. Step 4: Simplify right side
    104,159.98x = 8,108,696,760.81
  5. Step 5: Solve for x
    x = 8,108,696,760.81/104,159.98
  6. Step 6: Final answer
    x = 77,848.49

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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.