Home / 152,689.20-210,688.08-87,273.30

Finding the Fourth Proportional to 152,689.20, 210,688.08 and 87,273.30

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Solution

The fourth proportional to 152,689.20, 210,688.08 and 87,273.30 is: 120,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,689.20 : 210,688.08 = 87,273.30 : x
  2. Step 2: Convert to fraction form
    152,689.20/210,688.08 = 87,273.30/x
  3. Step 3: Cross multiply
    152,689.20x = 210,688.08 × 87,273.30
  4. Step 4: Simplify right side
    152,689.20x = 18,387,444,012.26
  5. Step 5: Solve for x
    x = 18,387,444,012.26/152,689.20
  6. Step 6: Final answer
    x = 120,424.00

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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.