Home / 142,225.08-213,266.22-47,421.72

Finding the Fourth Proportional to 142,225.08, 213,266.22 and 47,421.72

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Solution

The fourth proportional to 142,225.08, 213,266.22 and 47,421.72 is: 71,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,225.08 : 213,266.22 = 47,421.72 : x
  2. Step 2: Convert to fraction form
    142,225.08/213,266.22 = 47,421.72/x
  3. Step 3: Cross multiply
    142,225.08x = 213,266.22 × 47,421.72
  4. Step 4: Simplify right side
    142,225.08x = 10,113,450,970.30
  5. Step 5: Solve for x
    x = 10,113,450,970.30/142,225.08
  6. Step 6: Final answer
    x = 71,108.77

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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.