Home / 121,748,358.54-168,152,363.76-80,118,272.91

Finding the Fourth Proportional to 121,748,358.54, 168,152,363.76 and 80,118,272.91

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Solution

The fourth proportional to 121,748,358.54, 168,152,363.76 and 80,118,272.91 is: 110,655,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,748,358.54 : 168,152,363.76 = 80,118,272.91 : x
  2. Step 2: Convert to fraction form
    121,748,358.54/168,152,363.76 = 80,118,272.91/x
  3. Step 3: Cross multiply
    121,748,358.54x = 168,152,363.76 × 80,118,272.91
  4. Step 4: Simplify right side
    121,748,358.54x = 13,472,076,970,185,272
  5. Step 5: Solve for x
    x = 13,472,076,970,185,272/121,748,358.54
  6. Step 6: Final answer
    x = 110,655,101.49

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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.