Home / 147,137.50-203,071.62-86,688.82

Finding the Fourth Proportional to 147,137.50, 203,071.62 and 86,688.82

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Solution

The fourth proportional to 147,137.50, 203,071.62 and 86,688.82 is: 119,643.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,137.50 : 203,071.62 = 86,688.82 : x
  2. Step 2: Convert to fraction form
    147,137.50/203,071.62 = 86,688.82/x
  3. Step 3: Cross multiply
    147,137.50x = 203,071.62 × 86,688.82
  4. Step 4: Simplify right side
    147,137.50x = 17,604,039,113.29
  5. Step 5: Solve for x
    x = 17,604,039,113.29/147,137.50
  6. Step 6: Final answer
    x = 119,643.46

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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.