Home / 88,128,020.80-132,192,031.20-86,336,430.40

Finding the Fourth Proportional to 88,128,020.80, 132,192,031.20 and 86,336,430.40

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Solution

The fourth proportional to 88,128,020.80, 132,192,031.20 and 86,336,430.40 is: 129,504,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128,020.80 : 132,192,031.20 = 86,336,430.40 : x
  2. Step 2: Convert to fraction form
    88,128,020.80/132,192,031.20 = 86,336,430.40/x
  3. Step 3: Cross multiply
    88,128,020.80x = 132,192,031.20 × 86,336,430.40
  4. Step 4: Simplify right side
    88,128,020.80x = 11,412,988,101,133,430
  5. Step 5: Solve for x
    x = 11,412,988,101,133,430/88,128,020.80
  6. Step 6: Final answer
    x = 129,504,645.60

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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.