Home / 128,035,953.38-176,670,809.40-71,513,734.61

Finding the Fourth Proportional to 128,035,953.38, 176,670,809.40 and 71,513,734.61

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Solution

The fourth proportional to 128,035,953.38, 176,670,809.40 and 71,513,734.61 is: 98,678,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,035,953.38 : 176,670,809.40 = 71,513,734.61 : x
  2. Step 2: Convert to fraction form
    128,035,953.38/176,670,809.40 = 71,513,734.61/x
  3. Step 3: Cross multiply
    128,035,953.38x = 176,670,809.40 × 71,513,734.61
  4. Step 4: Simplify right side
    128,035,953.38x = 12,634,389,377,475,346
  5. Step 5: Solve for x
    x = 12,634,389,377,475,346/128,035,953.38
  6. Step 6: Final answer
    x = 98,678,449.64

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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.