Home / 142,639.84-196,849.74-86,050

Finding the Fourth Proportional to 142,639.84, 196,849.74 and 86,050

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Solution

The fourth proportional to 142,639.84, 196,849.74 and 86,050 is: 118,753.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,639.84 : 196,849.74 = 86,050 : x
  2. Step 2: Convert to fraction form
    142,639.84/196,849.74 = 86,050/x
  3. Step 3: Cross multiply
    142,639.84x = 196,849.74 × 86,050
  4. Step 4: Simplify right side
    142,639.84x = 16,938,920,127
  5. Step 5: Solve for x
    x = 16,938,920,127/142,639.84
  6. Step 6: Final answer
    x = 118,753.08

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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.