Home / 121,896,725.76-168,209,200.44-66,896,125.20

Finding the Fourth Proportional to 121,896,725.76, 168,209,200.44 and 66,896,125.20

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Solution

The fourth proportional to 121,896,725.76, 168,209,200.44 and 66,896,125.20 is: 92,312,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,896,725.76 : 168,209,200.44 = 66,896,125.20 : x
  2. Step 2: Convert to fraction form
    121,896,725.76/168,209,200.44 = 66,896,125.20/x
  3. Step 3: Cross multiply
    121,896,725.76x = 168,209,200.44 × 66,896,125.20
  4. Step 4: Simplify right side
    121,896,725.76x = 11,252,543,732,426,136
  5. Step 5: Solve for x
    x = 11,252,543,732,426,136/121,896,725.76
  6. Step 6: Final answer
    x = 92,312,108.16

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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.