Home / 145,308,799.80-217,716,549.30-87,679,978.20

Finding the Fourth Proportional to 145,308,799.80, 217,716,549.30 and 87,679,978.20

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Solution

The fourth proportional to 145,308,799.80, 217,716,549.30 and 87,679,978.20 is: 131,371,137.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,308,799.80 : 217,716,549.30 = 87,679,978.20 : x
  2. Step 2: Convert to fraction form
    145,308,799.80/217,716,549.30 = 87,679,978.20/x
  3. Step 3: Cross multiply
    145,308,799.80x = 217,716,549.30 × 87,679,978.20
  4. Step 4: Simplify right side
    145,308,799.80x = 19,089,382,296,403,228
  5. Step 5: Solve for x
    x = 19,089,382,296,403,228/145,308,799.80
  6. Step 6: Final answer
    x = 131,371,137.35

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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.