Home / 86,908,851.70-130,363,277.55-72,878,809.30

Finding the Fourth Proportional to 86,908,851.70, 130,363,277.55 and 72,878,809.30

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Solution

The fourth proportional to 86,908,851.70, 130,363,277.55 and 72,878,809.30 is: 109,318,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,908,851.70 : 130,363,277.55 = 72,878,809.30 : x
  2. Step 2: Convert to fraction form
    86,908,851.70/130,363,277.55 = 72,878,809.30/x
  3. Step 3: Cross multiply
    86,908,851.70x = 130,363,277.55 × 72,878,809.30
  4. Step 4: Simplify right side
    86,908,851.70x = 9,500,720,444,289,420
  5. Step 5: Solve for x
    x = 9,500,720,444,289,420/86,908,851.70
  6. Step 6: Final answer
    x = 109,318,213.95

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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.