Home / 127,818,005.10-191,727,007.65-81,901,502.70

Finding the Fourth Proportional to 127,818,005.10, 191,727,007.65 and 81,901,502.70

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Solution

The fourth proportional to 127,818,005.10, 191,727,007.65 and 81,901,502.70 is: 122,852,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,818,005.10 : 191,727,007.65 = 81,901,502.70 : x
  2. Step 2: Convert to fraction form
    127,818,005.10/191,727,007.65 = 81,901,502.70/x
  3. Step 3: Cross multiply
    127,818,005.10x = 191,727,007.65 × 81,901,502.70
  4. Step 4: Simplify right side
    127,818,005.10x = 15,702,730,034,709,396
  5. Step 5: Solve for x
    x = 15,702,730,034,709,396/127,818,005.10
  6. Step 6: Final answer
    x = 122,852,254.05

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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.