Home / 164,807,999.40-247,211,999.10-100,238,428.20

Finding the Fourth Proportional to 164,807,999.40, 247,211,999.10 and 100,238,428.20

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Solution

The fourth proportional to 164,807,999.40, 247,211,999.10 and 100,238,428.20 is: 150,357,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,807,999.40 : 247,211,999.10 = 100,238,428.20 : x
  2. Step 2: Convert to fraction form
    164,807,999.40/247,211,999.10 = 100,238,428.20/x
  3. Step 3: Cross multiply
    164,807,999.40x = 247,211,999.10 × 100,238,428.20
  4. Step 4: Simplify right side
    164,807,999.40x = 24,780,142,221,963,816
  5. Step 5: Solve for x
    x = 24,780,142,221,963,816/164,807,999.40
  6. Step 6: Final answer
    x = 150,357,642.30

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1.5x scale

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.