Home / 210,829,732.74-290,929,145.85-128,314,397.70

Finding the Fourth Proportional to 210,829,732.74, 290,929,145.85 and 128,314,397.70

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Solution

The fourth proportional to 210,829,732.74, 290,929,145.85 and 128,314,397.70 is: 177,064,200.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,829,732.74 : 290,929,145.85 = 128,314,397.70 : x
  2. Step 2: Convert to fraction form
    210,829,732.74/290,929,145.85 = 128,314,397.70/x
  3. Step 3: Cross multiply
    210,829,732.74x = 290,929,145.85 × 128,314,397.70
  4. Step 4: Simplify right side
    210,829,732.74x = 37,330,398,123,118,208
  5. Step 5: Solve for x
    x = 37,330,398,123,118,208/210,829,732.74
  6. Step 6: Final answer
    x = 177,064,200.76

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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.