Home / 128,210,177.43-176,861,812.03-77,989,750.16

Finding the Fourth Proportional to 128,210,177.43, 176,861,812.03 and 77,989,750.16

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Solution

The fourth proportional to 128,210,177.43, 176,861,812.03 and 77,989,750.16 is: 107,584,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210,177.43 : 176,861,812.03 = 77,989,750.16 : x
  2. Step 2: Convert to fraction form
    128,210,177.43/176,861,812.03 = 77,989,750.16/x
  3. Step 3: Cross multiply
    128,210,177.43x = 176,861,812.03 × 77,989,750.16
  4. Step 4: Simplify right side
    128,210,177.43x = 13,793,408,531,985,300
  5. Step 5: Solve for x
    x = 13,793,408,531,985,300/128,210,177.43
  6. Step 6: Final answer
    x = 107,584,349.45

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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.