Home / 125,817,904.30-188,511,327.60-99,989,871.70

Finding the Fourth Proportional to 125,817,904.30, 188,511,327.60 and 99,989,871.70

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Solution

The fourth proportional to 125,817,904.30, 188,511,327.60 and 99,989,871.70 is: 149,813,522.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,817,904.30 : 188,511,327.60 = 99,989,871.70 : x
  2. Step 2: Convert to fraction form
    125,817,904.30/188,511,327.60 = 99,989,871.70/x
  3. Step 3: Cross multiply
    125,817,904.30x = 188,511,327.60 × 99,989,871.70
  4. Step 4: Simplify right side
    125,817,904.30x = 18,849,223,460,720,668
  5. Step 5: Solve for x
    x = 18,849,223,460,720,668/125,817,904.30
  6. Step 6: Final answer
    x = 149,813,522.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.