Home / 112,387.66-155,088.75-64,641.81

Finding the Fourth Proportional to 112,387.66, 155,088.75 and 64,641.81

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Solution

The fourth proportional to 112,387.66, 155,088.75 and 64,641.81 is: 89,202.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,387.66 : 155,088.75 = 64,641.81 : x
  2. Step 2: Convert to fraction form
    112,387.66/155,088.75 = 64,641.81/x
  3. Step 3: Cross multiply
    112,387.66x = 155,088.75 × 64,641.81
  4. Step 4: Simplify right side
    112,387.66x = 10,025,217,510.64
  5. Step 5: Solve for x
    x = 10,025,217,510.64/112,387.66
  6. Step 6: Final answer
    x = 89,202.12

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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.