Home / 211,915,721.28-292,377,969.12-123,746,116.80

Finding the Fourth Proportional to 211,915,721.28, 292,377,969.12 and 123,746,116.80

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Solution

The fourth proportional to 211,915,721.28, 292,377,969.12 and 123,746,116.80 is: 170,731,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,915,721.28 : 292,377,969.12 = 123,746,116.80 : x
  2. Step 2: Convert to fraction form
    211,915,721.28/292,377,969.12 = 123,746,116.80/x
  3. Step 3: Cross multiply
    211,915,721.28x = 292,377,969.12 × 123,746,116.80
  4. Step 4: Simplify right side
    211,915,721.28x = 36,180,638,316,470,312
  5. Step 5: Solve for x
    x = 36,180,638,316,470,312/211,915,721.28
  6. Step 6: Final answer
    x = 170,731,260.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.