Home / 86,283,614.60-129,425,421.90-78,473,400.20

Finding the Fourth Proportional to 86,283,614.60, 129,425,421.90 and 78,473,400.20

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Solution

The fourth proportional to 86,283,614.60, 129,425,421.90 and 78,473,400.20 is: 117,710,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,283,614.60 : 129,425,421.90 = 78,473,400.20 : x
  2. Step 2: Convert to fraction form
    86,283,614.60/129,425,421.90 = 78,473,400.20/x
  3. Step 3: Cross multiply
    86,283,614.60x = 129,425,421.90 × 78,473,400.20
  4. Step 4: Simplify right side
    86,283,614.60x = 10,156,452,928,812,546
  5. Step 5: Solve for x
    x = 10,156,452,928,812,546/86,283,614.60
  6. Step 6: Final answer
    x = 117,710,100.30

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1.5x scale

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.