Home / 130,621,971.36-180,258,268.28-71,884,636.40

Finding the Fourth Proportional to 130,621,971.36, 180,258,268.28 and 71,884,636.40

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Solution

The fourth proportional to 130,621,971.36, 180,258,268.28 and 71,884,636.40 is: 99,200,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,621,971.36 : 180,258,268.28 = 71,884,636.40 : x
  2. Step 2: Convert to fraction form
    130,621,971.36/180,258,268.28 = 71,884,636.40/x
  3. Step 3: Cross multiply
    130,621,971.36x = 180,258,268.28 × 71,884,636.40
  4. Step 4: Simplify right side
    130,621,971.36x = 12,957,800,073,401,454
  5. Step 5: Solve for x
    x = 12,957,800,073,401,454/130,621,971.36
  6. Step 6: Final answer
    x = 99,200,769.51

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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.