Home / 129,088,015.40-193,632,023.10-81,312,271.40

Finding the Fourth Proportional to 129,088,015.40, 193,632,023.10 and 81,312,271.40

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Solution

The fourth proportional to 129,088,015.40, 193,632,023.10 and 81,312,271.40 is: 121,968,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,088,015.40 : 193,632,023.10 = 81,312,271.40 : x
  2. Step 2: Convert to fraction form
    129,088,015.40/193,632,023.10 = 81,312,271.40/x
  3. Step 3: Cross multiply
    129,088,015.40x = 193,632,023.10 × 81,312,271.40
  4. Step 4: Simplify right side
    129,088,015.40x = 15,744,659,614,038,270
  5. Step 5: Solve for x
    x = 15,744,659,614,038,270/129,088,015.40
  6. Step 6: Final answer
    x = 121,968,407.10

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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.