Home / 138,520,569.60-207,643,802.40-65,609,197.20

Finding the Fourth Proportional to 138,520,569.60, 207,643,802.40 and 65,609,197.20

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Solution

The fourth proportional to 138,520,569.60, 207,643,802.40 and 65,609,197.20 is: 98,348,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,520,569.60 : 207,643,802.40 = 65,609,197.20 : x
  2. Step 2: Convert to fraction form
    138,520,569.60/207,643,802.40 = 65,609,197.20/x
  3. Step 3: Cross multiply
    138,520,569.60x = 207,643,802.40 × 65,609,197.20
  4. Step 4: Simplify right side
    138,520,569.60x = 13,623,343,179,019,434
  5. Step 5: Solve for x
    x = 13,623,343,179,019,434/138,520,569.60
  6. Step 6: Final answer
    x = 98,348,882.18

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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.