Home / 128,980,988.16-178,001,250.88-97,134,157.76

Finding the Fourth Proportional to 128,980,988.16, 178,001,250.88 and 97,134,157.76

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Solution

The fourth proportional to 128,980,988.16, 178,001,250.88 and 97,134,157.76 is: 134,050,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,980,988.16 : 178,001,250.88 = 97,134,157.76 : x
  2. Step 2: Convert to fraction form
    128,980,988.16/178,001,250.88 = 97,134,157.76/x
  3. Step 3: Cross multiply
    128,980,988.16x = 178,001,250.88 × 97,134,157.76
  4. Step 4: Simplify right side
    128,980,988.16x = 17,290,001,584,455,260
  5. Step 5: Solve for x
    x = 17,290,001,584,455,260/128,980,988.16
  6. Step 6: Final answer
    x = 134,050,776.25

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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.