Home / 128,323,011.60-192,531,756.60-42,064,232.40

Finding the Fourth Proportional to 128,323,011.60, 192,531,756.60 and 42,064,232.40

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Solution

The fourth proportional to 128,323,011.60, 192,531,756.60 and 42,064,232.40 is: 63,111,833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,323,011.60 : 192,531,756.60 = 42,064,232.40 : x
  2. Step 2: Convert to fraction form
    128,323,011.60/192,531,756.60 = 42,064,232.40/x
  3. Step 3: Cross multiply
    128,323,011.60x = 192,531,756.60 × 42,064,232.40
  4. Step 4: Simplify right side
    128,323,011.60x = 8,098,700,554,002,633
  5. Step 5: Solve for x
    x = 8,098,700,554,002,633/128,323,011.60
  6. Step 6: Final answer
    x = 63,111,833.59

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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.