Home / 130,433,666.40-195,650,499.60-128,418,127.20

Finding the Fourth Proportional to 130,433,666.40, 195,650,499.60 and 128,418,127.20

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Solution

The fourth proportional to 130,433,666.40, 195,650,499.60 and 128,418,127.20 is: 192,627,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,433,666.40 : 195,650,499.60 = 128,418,127.20 : x
  2. Step 2: Convert to fraction form
    130,433,666.40/195,650,499.60 = 128,418,127.20/x
  3. Step 3: Cross multiply
    130,433,666.40x = 195,650,499.60 × 128,418,127.20
  4. Step 4: Simplify right side
    130,433,666.40x = 25,125,070,744,376,348
  5. Step 5: Solve for x
    x = 25,125,070,744,376,348/130,433,666.40
  6. Step 6: Final answer
    x = 192,627,190.80

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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.