Home / 121,128,001.30-181,692,001.95-70,109,665.30

Finding the Fourth Proportional to 121,128,001.30, 181,692,001.95 and 70,109,665.30

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Solution

The fourth proportional to 121,128,001.30, 181,692,001.95 and 70,109,665.30 is: 105,164,497.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128,001.30 : 181,692,001.95 = 70,109,665.30 : x
  2. Step 2: Convert to fraction form
    121,128,001.30/181,692,001.95 = 70,109,665.30/x
  3. Step 3: Cross multiply
    121,128,001.30x = 181,692,001.95 × 70,109,665.30
  4. Step 4: Simplify right side
    121,128,001.30x = 12,738,365,444,401,446
  5. Step 5: Solve for x
    x = 12,738,365,444,401,446/121,128,001.30
  6. Step 6: Final answer
    x = 105,164,497.95

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1.5x scale

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.