Home / 212,872,031.40-319,308,047.10-91,939,679.40

Finding the Fourth Proportional to 212,872,031.40, 319,308,047.10 and 91,939,679.40

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Solution

The fourth proportional to 212,872,031.40, 319,308,047.10 and 91,939,679.40 is: 137,909,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,872,031.40 : 319,308,047.10 = 91,939,679.40 : x
  2. Step 2: Convert to fraction form
    212,872,031.40/319,308,047.10 = 91,939,679.40/x
  3. Step 3: Cross multiply
    212,872,031.40x = 319,308,047.10 × 91,939,679.40
  4. Step 4: Simplify right side
    212,872,031.40x = 29,357,079,480,214,104
  5. Step 5: Solve for x
    x = 29,357,079,480,214,104/212,872,031.40
  6. Step 6: Final answer
    x = 137,909,519.10

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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.