Home / 131,815.41-181,904.36-71,384.67

Finding the Fourth Proportional to 131,815.41, 181,904.36 and 71,384.67

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Solution

The fourth proportional to 131,815.41, 181,904.36 and 71,384.67 is: 98,510.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,815.41 : 181,904.36 = 71,384.67 : x
  2. Step 2: Convert to fraction form
    131,815.41/181,904.36 = 71,384.67/x
  3. Step 3: Cross multiply
    131,815.41x = 181,904.36 × 71,384.67
  4. Step 4: Simplify right side
    131,815.41x = 12,985,182,710.16
  5. Step 5: Solve for x
    x = 12,985,182,710.16/131,815.41
  6. Step 6: Final answer
    x = 98,510.35

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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.