Home / 106,981.14-147,639.04-64,538.76

Finding the Fourth Proportional to 106,981.14, 147,639.04 and 64,538.76

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Solution

The fourth proportional to 106,981.14, 147,639.04 and 64,538.76 is: 89,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,981.14 : 147,639.04 = 64,538.76 : x
  2. Step 2: Convert to fraction form
    106,981.14/147,639.04 = 64,538.76/x
  3. Step 3: Cross multiply
    106,981.14x = 147,639.04 × 64,538.76
  4. Step 4: Simplify right side
    106,981.14x = 9,528,440,569.19
  5. Step 5: Solve for x
    x = 9,528,440,569.19/106,981.14
  6. Step 6: Final answer
    x = 89,066.55

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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.