Home / 86,938,729.70-130,408,094.55-80,369,564.90

Finding the Fourth Proportional to 86,938,729.70, 130,408,094.55 and 80,369,564.90

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Solution

The fourth proportional to 86,938,729.70, 130,408,094.55 and 80,369,564.90 is: 120,554,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938,729.70 : 130,408,094.55 = 80,369,564.90 : x
  2. Step 2: Convert to fraction form
    86,938,729.70/130,408,094.55 = 80,369,564.90/x
  3. Step 3: Cross multiply
    86,938,729.70x = 130,408,094.55 × 80,369,564.90
  4. Step 4: Simplify right side
    86,938,729.70x = 10,480,841,818,421,562
  5. Step 5: Solve for x
    x = 10,480,841,818,421,562/86,938,729.70
  6. Step 6: Final answer
    x = 120,554,347.35

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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.