Home / 128,051,397.92-192,064,170.18-86,817,032.20

Finding the Fourth Proportional to 128,051,397.92, 192,064,170.18 and 86,817,032.20

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Solution

The fourth proportional to 128,051,397.92, 192,064,170.18 and 86,817,032.20 is: 130,216,784.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051,397.92 : 192,064,170.18 = 86,817,032.20 : x
  2. Step 2: Convert to fraction form
    128,051,397.92/192,064,170.18 = 86,817,032.20/x
  3. Step 3: Cross multiply
    128,051,397.92x = 192,064,170.18 × 86,817,032.20
  4. Step 4: Simplify right side
    128,051,397.92x = 16,674,441,247,548,984
  5. Step 5: Solve for x
    x = 16,674,441,247,548,984/128,051,397.92
  6. Step 6: Final answer
    x = 130,216,784.19

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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.