Home / 141,773,818.40-212,660,727.60-81,139,680.80

Finding the Fourth Proportional to 141,773,818.40, 212,660,727.60 and 81,139,680.80

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Solution

The fourth proportional to 141,773,818.40, 212,660,727.60 and 81,139,680.80 is: 121,709,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,773,818.40 : 212,660,727.60 = 81,139,680.80 : x
  2. Step 2: Convert to fraction form
    141,773,818.40/212,660,727.60 = 81,139,680.80/x
  3. Step 3: Cross multiply
    141,773,818.40x = 212,660,727.60 × 81,139,680.80
  4. Step 4: Simplify right side
    141,773,818.40x = 17,255,223,556,159,748
  5. Step 5: Solve for x
    x = 17,255,223,556,159,748/141,773,818.40
  6. Step 6: Final answer
    x = 121,709,521.20

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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.