Home / 145,963.13-201,429.14-78,895.13

Finding the Fourth Proportional to 145,963.13, 201,429.14 and 78,895.13

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Solution

The fourth proportional to 145,963.13, 201,429.14 and 78,895.13 is: 108,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,963.13 : 201,429.14 = 78,895.13 : x
  2. Step 2: Convert to fraction form
    145,963.13/201,429.14 = 78,895.13/x
  3. Step 3: Cross multiply
    145,963.13x = 201,429.14 × 78,895.13
  4. Step 4: Simplify right side
    145,963.13x = 15,891,776,784.47
  5. Step 5: Solve for x
    x = 15,891,776,784.47/145,963.13
  6. Step 6: Final answer
    x = 108,875.28

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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.