Home / 129,031,812.80-193,547,719.20-86,033,643.20

Finding the Fourth Proportional to 129,031,812.80, 193,547,719.20 and 86,033,643.20

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Solution

The fourth proportional to 129,031,812.80, 193,547,719.20 and 86,033,643.20 is: 129,050,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,031,812.80 : 193,547,719.20 = 86,033,643.20 : x
  2. Step 2: Convert to fraction form
    129,031,812.80/193,547,719.20 = 86,033,643.20/x
  3. Step 3: Cross multiply
    129,031,812.80x = 193,547,719.20 × 86,033,643.20
  4. Step 4: Simplify right side
    129,031,812.80x = 16,651,615,415,826,588
  5. Step 5: Solve for x
    x = 16,651,615,415,826,588/129,031,812.80
  6. Step 6: Final answer
    x = 129,050,464.80

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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.