Home / 87,235,228.20-130,852,842.30-86,638,031.40

Finding the Fourth Proportional to 87,235,228.20, 130,852,842.30 and 86,638,031.40

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Solution

The fourth proportional to 87,235,228.20, 130,852,842.30 and 86,638,031.40 is: 129,957,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,235,228.20 : 130,852,842.30 = 86,638,031.40 : x
  2. Step 2: Convert to fraction form
    87,235,228.20/130,852,842.30 = 86,638,031.40/x
  3. Step 3: Cross multiply
    87,235,228.20x = 130,852,842.30 × 86,638,031.40
  4. Step 4: Simplify right side
    87,235,228.20x = 11,336,832,659,966,648
  5. Step 5: Solve for x
    x = 11,336,832,659,966,648/87,235,228.20
  6. Step 6: Final answer
    x = 129,957,047.10

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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.