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Finding the Fourth Proportional to 157,967.84, 218,001.48 and 86,352.72

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Solution

The fourth proportional to 157,967.84, 218,001.48 and 86,352.72 is: 119,169.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,967.84 : 218,001.48 = 86,352.72 : x
  2. Step 2: Convert to fraction form
    157,967.84/218,001.48 = 86,352.72/x
  3. Step 3: Cross multiply
    157,967.84x = 218,001.48 × 86,352.72
  4. Step 4: Simplify right side
    157,967.84x = 18,825,020,762.03
  5. Step 5: Solve for x
    x = 18,825,020,762.03/157,967.84
  6. Step 6: Final answer
    x = 119,169.96

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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.