Home / 128,927,144.40-193,334,729.40-42,632,206.80

Finding the Fourth Proportional to 128,927,144.40, 193,334,729.40 and 42,632,206.80

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Solution

The fourth proportional to 128,927,144.40, 193,334,729.40 and 42,632,206.80 is: 63,929,796.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927,144.40 : 193,334,729.40 = 42,632,206.80 : x
  2. Step 2: Convert to fraction form
    128,927,144.40/193,334,729.40 = 42,632,206.80/x
  3. Step 3: Cross multiply
    128,927,144.40x = 193,334,729.40 × 42,632,206.80
  4. Step 4: Simplify right side
    128,927,144.40x = 8,242,286,165,402,840
  5. Step 5: Solve for x
    x = 8,242,286,165,402,840/128,927,144.40
  6. Step 6: Final answer
    x = 63,929,796.97

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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.