Home / 152,543.40-210,508.38-87,988.56

Finding the Fourth Proportional to 152,543.40, 210,508.38 and 87,988.56

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Solution

The fourth proportional to 152,543.40, 210,508.38 and 87,988.56 is: 121,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,543.40 : 210,508.38 = 87,988.56 : x
  2. Step 2: Convert to fraction form
    152,543.40/210,508.38 = 87,988.56/x
  3. Step 3: Cross multiply
    152,543.40x = 210,508.38 × 87,988.56
  4. Step 4: Simplify right side
    152,543.40x = 18,522,329,224.13
  5. Step 5: Solve for x
    x = 18,522,329,224.13/152,543.40
  6. Step 6: Final answer
    x = 121,423.34

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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.