Home / 145,017,900.64-200,127,253.80-78,940,298.17

Finding the Fourth Proportional to 145,017,900.64, 200,127,253.80 and 78,940,298.17

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Solution

The fourth proportional to 145,017,900.64, 200,127,253.80 and 78,940,298.17 is: 108,939,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,900.64 : 200,127,253.80 = 78,940,298.17 : x
  2. Step 2: Convert to fraction form
    145,017,900.64/200,127,253.80 = 78,940,298.17/x
  3. Step 3: Cross multiply
    145,017,900.64x = 200,127,253.80 × 78,940,298.17
  4. Step 4: Simplify right side
    145,017,900.64x = 15,798,105,086,915,266
  5. Step 5: Solve for x
    x = 15,798,105,086,915,266/145,017,900.64
  6. Step 6: Final answer
    x = 108,939,000.06

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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.