Home / 142,821.20-214,261.76-42,988.70

Finding the Fourth Proportional to 142,821.20, 214,261.76 and 42,988.70

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Solution

The fourth proportional to 142,821.20, 214,261.76 and 42,988.70 is: 64,492.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,821.20 : 214,261.76 = 42,988.70 : x
  2. Step 2: Convert to fraction form
    142,821.20/214,261.76 = 42,988.70/x
  3. Step 3: Cross multiply
    142,821.20x = 214,261.76 × 42,988.70
  4. Step 4: Simplify right side
    142,821.20x = 9,210,834,522.11
  5. Step 5: Solve for x
    x = 9,210,834,522.11/142,821.20
  6. Step 6: Final answer
    x = 64,492.07

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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.