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Finding the Fourth Proportional to 159,987.51, 240,112.50 and 81,124.29

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Solution

The fourth proportional to 159,987.51, 240,112.50 and 81,124.29 is: 121,752.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,987.51 : 240,112.50 = 81,124.29 : x
  2. Step 2: Convert to fraction form
    159,987.51/240,112.50 = 81,124.29/x
  3. Step 3: Cross multiply
    159,987.51x = 240,112.50 × 81,124.29
  4. Step 4: Simplify right side
    159,987.51x = 19,478,956,082.63
  5. Step 5: Solve for x
    x = 19,478,956,082.63/159,987.51
  6. Step 6: Final answer
    x = 121,752.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.