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Finding the Fourth Proportional to 159,287.65, 238,820.75 and 70,492.72

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Solution

The fourth proportional to 159,287.65, 238,820.75 and 70,492.72 is: 105,690.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,287.65 : 238,820.75 = 70,492.72 : x
  2. Step 2: Convert to fraction form
    159,287.65/238,820.75 = 70,492.72/x
  3. Step 3: Cross multiply
    159,287.65x = 238,820.75 × 70,492.72
  4. Step 4: Simplify right side
    159,287.65x = 16,835,124,259.94
  5. Step 5: Solve for x
    x = 16,835,124,259.94/159,287.65
  6. Step 6: Final answer
    x = 105,690.08

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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.