Home / 141,638,835-212,223,373.32-86,138,797.59

Finding the Fourth Proportional to 141,638,835, 212,223,373.32 and 86,138,797.59

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Solution

The fourth proportional to 141,638,835, 212,223,373.32 and 86,138,797.59 is: 129,065,352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,638,835 : 212,223,373.32 = 86,138,797.59 : x
  2. Step 2: Convert to fraction form
    141,638,835/212,223,373.32 = 86,138,797.59/x
  3. Step 3: Cross multiply
    141,638,835x = 212,223,373.32 × 86,138,797.59
  4. Step 4: Simplify right side
    141,638,835x = 18,280,666,198,278,488
  5. Step 5: Solve for x
    x = 18,280,666,198,278,488/141,638,835
  6. Step 6: Final answer
    x = 129,065,352.72

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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.