Home / 145,017,901.64-200,127,255.18-78,940,299.17

Finding the Fourth Proportional to 145,017,901.64, 200,127,255.18 and 78,940,299.17

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Solution

The fourth proportional to 145,017,901.64, 200,127,255.18 and 78,940,299.17 is: 108,939,001.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,901.64 : 200,127,255.18 = 78,940,299.17 : x
  2. Step 2: Convert to fraction form
    145,017,901.64/200,127,255.18 = 78,940,299.17/x
  3. Step 3: Cross multiply
    145,017,901.64x = 200,127,255.18 × 78,940,299.17
  4. Step 4: Simplify right side
    145,017,901.64x = 15,798,105,395,980,134
  5. Step 5: Solve for x
    x = 15,798,105,395,980,134/145,017,901.64
  6. Step 6: Final answer
    x = 108,939,001.44

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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.