Home / 138,348,002.40-207,298,054.80-87,138,376.80

Finding the Fourth Proportional to 138,348,002.40, 207,298,054.80 and 87,138,376.80

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Solution

The fourth proportional to 138,348,002.40, 207,298,054.80 and 87,138,376.80 is: 130,566,511.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,348,002.40 : 207,298,054.80 = 87,138,376.80 : x
  2. Step 2: Convert to fraction form
    138,348,002.40/207,298,054.80 = 87,138,376.80/x
  3. Step 3: Cross multiply
    138,348,002.40x = 207,298,054.80 × 87,138,376.80
  4. Step 4: Simplify right side
    138,348,002.40x = 18,063,616,009,069,448
  5. Step 5: Solve for x
    x = 18,063,616,009,069,448/138,348,002.40
  6. Step 6: Final answer
    x = 130,566,511.23

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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.