Home / 156,740.72-216,368.42-105,822.43

Finding the Fourth Proportional to 156,740.72, 216,368.42 and 105,822.43

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Solution

The fourth proportional to 156,740.72, 216,368.42 and 105,822.43 is: 146,079.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,740.72 : 216,368.42 = 105,822.43 : x
  2. Step 2: Convert to fraction form
    156,740.72/216,368.42 = 105,822.43/x
  3. Step 3: Cross multiply
    156,740.72x = 216,368.42 × 105,822.43
  4. Step 4: Simplify right side
    156,740.72x = 22,896,630,909.63
  5. Step 5: Solve for x
    x = 22,896,630,909.63/156,740.72
  6. Step 6: Final answer
    x = 146,079.66

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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.