Home / 100,037,140.16-138,048,288.44-55,385,102.31

Finding the Fourth Proportional to 100,037,140.16, 138,048,288.44 and 55,385,102.31

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Solution

The fourth proportional to 100,037,140.16, 138,048,288.44 and 55,385,102.31 is: 76,429,799.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,037,140.16 : 138,048,288.44 = 55,385,102.31 : x
  2. Step 2: Convert to fraction form
    100,037,140.16/138,048,288.44 = 55,385,102.31/x
  3. Step 3: Cross multiply
    100,037,140.16x = 138,048,288.44 × 55,385,102.31
  4. Step 4: Simplify right side
    100,037,140.16x = 7,645,818,578,692,865
  5. Step 5: Solve for x
    x = 7,645,818,578,692,865/100,037,140.16
  6. Step 6: Final answer
    x = 76,429,799.64

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1.5x scale

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.